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Petrous bone Stock Photos and Images
RMRJYBG5–. An atlas of human anatomy for students and physicians. Anatomy. THE SKULL AND THE BONES OF THE SKULL 49 Crista gall Sphenoethmoidal suture Sutura spheno-ethmoidalis (Impressiones digi- I tatac1 Frontal crest Crista frontalis Crista galli v Foramen caecum Foramen caecum ljuga cerebralia Anterior cranial fossa Fossa cranii anterior Middle cranial fossa Fossa cranii media Foramen lacerum medium Foramen, lacerum Clivus, or basilar groove Clivus Superior border of petrous bone Angulus superior pyramidis Jugular foramen . Foramen jugulare Fronto-ethmoidal suture Sutura fronto-ethmoidali: Sigmoid s
RMW9H81K–Archive image from page 805 of Cunningham's Text-book of anatomy (1914). Cunningham's Text-book of anatomy cunninghamstextb00cunn Year: 1914 ( 772 THE NERVOUS SYSTEM. The large sensory root gradually conceals the small motor root in its course forwards, and expands beneath the dura mater into a large flattened ganglion— the semilunar ganglion. This ganglion occupies an impression on the apex of the petrous portion of the temporal bone, and from it three large trunks arise—the ophthalmic or first, the maxillary or second, and the mandibular or third divisions of the nerve. The small motor root
RMPFM934–. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. RODENTIA. 391 through an ascending canal, which enters the cavit} of the skull close to the sella turcica, arriving at the brain much in the same manner as the internal carotid of the human subject. This branch is smaller than the vertebral artery. The other or external branch enters the cranium through a canal that opens upon the anterior surface of the petrous bone, and divides into the middle meningeal and ophthal- mic arteries. In the dormouse the distribution of the internal carotid very nearly resembles what is des
![. Elementary physiology . Fig. 115.—Diagrammatic view from before of the parts composing the organ of hearing of the left side. (After Arnold.) The temporal bone of the left side, with the accompanying soft parts, has been detached from the head, and a section has "been carried obliquely through it so as to remove the front of the meatus externus, half the tympanic membrane, and the upper and anterior wall of the tympanum and Eustachian tube. The meatus internus has also been opened, and the bony labyrinth exposed by the removal of the surrounding parts of the petrous bone, i, the pinna a Stock Photo](https://c8.alamy.com/comp/MA6YCA/elementary-physiology-fig-115diagrammatic-view-from-before-of-the-parts-composing-the-organ-of-hearing-of-the-left-side-after-arnold-the-temporal-bone-of-the-left-side-with-the-accompanying-soft-parts-has-been-detached-from-the-head-and-a-section-has-quotbeen-carried-obliquely-through-it-so-as-to-remove-the-front-of-the-meatus-externus-half-the-tympanic-membrane-and-the-upper-and-anterior-wall-of-the-tympanum-and-eustachian-tube-the-meatus-internus-has-also-been-opened-and-the-bony-labyrinth-exposed-by-the-removal-of-the-surrounding-parts-of-the-petrous-bone-i-the-pinna-a-MA6YCA.jpg ". Elementary physiology . Fig. 115.—Diagrammatic view from before of the parts composing the organ of hearing of the left side. (After Arnold.) The temporal bone of the left side, with the accompanying soft parts, has been detached from the head, and a section has "been carried obliquely through it so as to remove the front of the meatus externus, half the tympanic membrane, and the upper and anterior wall of the tympanum and Eustachian tube. The meatus internus has also been opened, and the bony labyrinth exposed by the removal of the surrounding parts of the petrous bone, i, the pinna a Stock Photo")
RMMA6YCA–. Elementary physiology . Fig. 115.—Diagrammatic view from before of the parts composing the organ of hearing of the left side. (After Arnold.) The temporal bone of the left side, with the accompanying soft parts, has been detached from the head, and a section has "been carried obliquely through it so as to remove the front of the meatus externus, half the tympanic membrane, and the upper and anterior wall of the tympanum and Eustachian tube. The meatus internus has also been opened, and the bony labyrinth exposed by the removal of the surrounding parts of the petrous bone, i, the pinna a
RM2AG9P8C–. The eclectic guide to health; or, Physiology and hygiene ... rmed of thin cartilage, coveredwith skin. It catches the sound, and directs it toward theinner parts of the ear. The canal leading from the conchais an opening through the petrous bone, lined with skin. It-is about one fourth of an inch in diameter, and an inchlong. It is an air chamber, and conducts the sound towardthe inner ear. The inner end of this canal is closed by amembrane, which is stretched tightly across it. This canalis called the external auditory canal. The middle portion of the ear is called the tympanum.It is an air
RMW23PN5–Archive image from page 178 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana0402todd Year: 1849 The superior cervical part of a peroccphalous lamb, terminated by the ears which are coalesced with, each other. Tlie skeleton of the parts represented in fg. 620., with the trachea and the oesophagus. a, squamous part, and b, condyloid part of the occipital bone; c, petrous ; d, squamous, part of the temporal bone; e, parietal boue; /, auditory bones. evolution, the head, the superior and the infe- rior limbs, were wanting. There existed only a trunk, w
RMPFYA07–. Cunningham's Text-book of anatomy. Anatomy. OSSEOUS LABYBINTH. 84J AUEIS INTEKNA. The internal ear or essential part of the organ of hearing is situated in the substance of the petrous part of the temporal bone, and consists of two sets of structures, viz.: (1) a series of passages hollowed out of the bone and constituting the osseous labyrinth; these are continuous with each other, and are named Superior semicircular canal Ampulla of superior sernicircular canal Canalis facialis. Kecessus ellipticus Crista vestibuli Recessus spha?ricus Cochlea Fenestra cochlea; Fenestra vestibuli Ampulla of
RMMA77EX–. Elementary anatomy and physiology : for colleges, academies, and other schools . Left Temporal Bone. 1, Squamous portion. 2, Mastoid portion. 3, Petrous portion. 4, Zygo- matic portion. 5, Articulating surface for lower jaw. 6, Temporal ridge. 7, Glenoid fissure. 8, Mastoid foramen. 9, Canal for ear. 10, Groove for digastric muscle. It, Styloid process. 12, Va- ginal process. 13, Glenoid Foramen. 14, Groove for Eustachian tube. Fig. 47. win
RM2AWF4FW–The development of the human body; a manual of human embryology . uced by thehollowing and bulging out of a portion of the petrous bone by outgrowths from the lin-ing membrane of the middleear. The cavities so formedare the mastoid cells, andtheir relations to the middle-ear cavity are in all respectssimilar to those of the eth-moidal and sphenoidal cells tothe nasal cavities. The re-maining portions of the tem-poral bone are partly formedby membrane bone andpartly from the branchialarch skeleton. An ossificationappears in the membranewhich forms the side of theskull in the temporal region and
RMW23KEG–Archive image from page 170 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana0402todd Year: 1849 Skull of a new lorn Child with Acrania. a, a, frontals; b, nasals; c, c, very convex zygoma- tic bones; d, small ensiform processes; e, sclla turcica; f, f, alte majores ossis sphenoidei; g, g, petrous bones; /(, basal part of the sphenoid bone; it i, condyloid parts of the occipital bone; I, I, depressed squamous parts of the occipital bone; m, small osseous lamina:, representing the parietal bones. Second Type.— The denuded surface of the basis cranii occ
RMPFYADW–. Cunningham's Text-book of anatomy. Anatomy. 772 THE NERVOUS SYSTEM. The large sensory root gradually conceals the small motor root in its course forwards, and expands beneath the dura mater into a large flattened ganglion— the semilunar ganglion. This ganglion occupies an impression on the apex of the petrous portion of the temporal bone, and from it three large trunks arise—the ophthalmic or first, the maxillary or second, and the mandibular or third divisions of the nerve. The small motor root of the nerve passes forward beneath the ganglion, and is incorporated wholly with the mandibular
RM2AN6X3J–A practical treatise on the diseases of the ear including the anatomy of the organ . ns atthe bottom of a triangular depression, situated towards themiddle of the edge which limits the inner and inferior surfacesof the petrous bone, and below the internal auditory canal. THE MEMBRANOUS LABYRINTH. TJie Auditory Nerve (Nervus acusticus).—The auditorynerve, or portio mollis (soft part of the 7th nerve), is the COCHLEA. 471 nerve of the sense of hearing, and is distributed exclusivelyto the internal ear. The auditory nerve arises from numer-ous white lines, or striae (linse transversa), which come
RMW0R100–Archive image from page 192 of The depths of the ocean. The depths of the ocean : a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic depthsofoceangen00murr Year: 1912 Fig. 128.—Petrous and Tympanic Bone of ziphws cavirostris. 'Challenger' Station 286, South Pacific, 2335 fathoms. Fig. 129.—Section of a Mangan- ese Nodule, showing a Tym- panic Bone of Mesoplodon in the Centre. 'Challenger' Station 160, Southern Ocean, 2600 fathoms. trace green grains are supposed to be casts which have l
RMPFA6YK–. The development of the human body : a manual of human embryology. Embryology; Embryo, Non-Mammalian. THE INTERNAL EAR 439 fluid known as the perilymph, the space occupied by the fluid being the perilymphatic space; the outer fibrous layer becomes peri- chondrium and later periosteum; and the precartilage undergoes chondrification and later ossifies to form the petrous portion of the temporal bone. The gelatinous layer completely surrounds most of the otocyst structures, which thus come to lie free in the perilymphatic space, but in the cochlear region the conditions are somewhat different. I
RM2AJDA2A–An American text-book of physiology . n front of the ear, though the contrary statement is frequently erroneouslymade. When the sound of the fork held between the teeth has failed, it mayagain be heard by stopping the ears. The Internal Ear, or Labyrinth.—The internal ear is the site of the trueorgan of hearing. The membranous labyrinth (PI. 2, Fig. 4; Fig. 278) is a com-plicated system of membranous tubes and sacs, in which terminate at particularpoints the filaments of the auditoiy nerve; it is contained within a chamber,the bony labyrinth, hollowed out in the petrous bone. The cavity of the
RMRYG8KJ–Elementary anatomy and physiology : for colleges, academies, and other schools elementaryanato00hitc Year: 1869 44 HITCHCOCK'S ANATOMY Fig. 46. Left Temporal Bone. 1, Squamous portion. 2, Mastoid portion. 3, Petrous portion. 4, Zygo- matic portion. 5, Articulating surface for lower jaw. 6, Temporal ridge. 7, Glenoid fissure. 8, Mastoid foramen. 9, Canal for ear. 10, Groove for digastric muscle. It, Styloid process. 12, Va- ginal process. 13, Glenoid Foramen. 14, Groove for Eustachian tube. Fig. 47. win
RMPFN63X–. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 370 RODENTIA. by a long process, between the ascending point of the inter-maxillary bone and that portion of the maxillary which forms the cheek : the parietals remain for some time distinct from each other, and from the inter-parietal; which latter, in the rabbit, is small, and resembles an ellipse placed transversely : in the hare this last bone can only be detected in very young specimens, when it is found to con- sist of two small pieces, which are separated by a prominent angle of the occipital. The petrous portion
RM2AWD76W–Human anatomy, including structure and development and practical considerations . -( pa^e -SOy;; butbeyond, the venous channel leaves the tentorium in its descent to the jugular fora-men, the farther attachment of the tenti^rium enclosinj^ ki superior petrosal sbuis.Since the anterior border of the tentorium springs, on each side, from the anteriorclinoid jjrocess, it follows that the two margins of the crescentic septum intersect inadvance of the ape.x of the petrous bone, the posterior border turning inward to theposterior clinoid process, whilst the anterior margin is connected with the
RMRYG8KH–Elementary anatomy and physiology : for colleges, academies, and other schools elementaryanato00hitc Year: 1869 Left Temporal Bone. 1, Squamous portion. 2, Mastoid portion. 3, Petrous portion. 4, Zygo- matic portion. 5, Articulating surface for lower jaw. 6, Temporal ridge. 7, Glenoid fissure. 8, Mastoid foramen. 9, Canal for ear. 10, Groove for digastric muscle. It, Styloid process. 12, Va- ginal process. 13, Glenoid Foramen. 14, Groove for Eustachian tube. Fig. 47. win Left Parietal Bone. 1, 2, 3, 4, Superior, Infe- rior, Anterior, and Posterior surfaces. 5, Ridge for Temporal Fascia. 6
RMPFYCEE–. Cunningham's Text-book of anatomy. Anatomy. THE TEMPOEAL BONES. 131 within the bone called the tympanum and forming the tegmen tympani. Laterally the line of fusion of the petrous with the squamous part is often indicated by a faint and irregular petro-squamous fissure. Posterior Surface.—The most conspicuous object on the posterior surface of the petrous part of the bone is the meatus acusticus interims (internal acoustic meatus), about 8 mm. deep in the adult. This has an oblique oval aperture, and leads outwards and slightly downwards into the substance of the bone, giving passage to the
RM2AGD1R9–. Local and regional anesthesia; with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. Fig. 206.—Schematic representation of the trigeminal axis and the direction theneedle should take to the gasserian ganglion: a, Normal type. The long axis of the bonycanal of the foramen ovale and the inclination of the petrous bone lie in the direction A,B; b, occasional variation. The long axis of the bony canal of the foramen ovale A, Bstands more steeply t
RMPFN4BK–. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. The superior cervical part of a peroccphalous lamb, terminated by the ears which are coalesced with, each other.. Tlie skeleton of the parts represented in fg. 620., with the trachea and the oesophagus. a, squamous part, and b, condyloid part of the occipital bone; c, petrous ; d, squamous, part of the temporal bone; e, parietal boue; /, auditory bones. evolution, the head, the superior and the infe- rior limbs, were wanting. There existed only a trunk, which contained a tolerably large heart, imperfect lungs, a malforme
RM2AFK6EM–. Local and regional anesthesia : with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and on other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. Fig. 201.—Schematic representation of the trigeminal axis and the direction the needleshould take to the gasserian ganglion: a, Normal type. The long axis of the bony canalof the foramen ovale and the inclination of the petrous bone lie in the direction A, B; b,occasional variation. The long axis of the bony canal of the foramen ovale A, B standsmore steep
![. Cunningham's Text-book of anatomy. Anatomy. Groove for transverse sinus iftf© M7 :. Portion of lateral semi- circular canal Elevation caused by canalis facialis Body of incus- Canal for tensor tympani muscle Carotid canal Membrana tympani" Styloid process Facial nerve Posterior margin of jugular foramen Fig. 1074.—Section through Petrous Portion of Temporal Bone of Adult. Showing the relation of the tympanum to the middle and posterior fossae of the skull. that the head of the malleus and the body and short process of the incus are altogether above the tympanic membrane, and that they o Stock Photo](https://c8.alamy.com/comp/PFY38J/cunninghams-text-book-of-anatomy-anatomy-groove-for-transverse-sinus-iftf-m7-portion-of-lateral-semi-circular-canal-elevation-caused-by-canalis-facialis-body-of-incus-canal-for-tensor-tympani-muscle-carotid-canal-membrana-tympaniquot-styloid-process-facial-nerve-posterior-margin-of-jugular-foramen-fig-1074section-through-petrous-portion-of-temporal-bone-of-adult-showing-the-relation-of-the-tympanum-to-the-middle-and-posterior-fossae-of-the-skull-that-the-head-of-the-malleus-and-the-body-and-short-process-of-the-incus-are-altogether-above-the-tympanic-membrane-and-that-they-o-PFY38J.jpg ". Cunningham's Text-book of anatomy. Anatomy. Groove for transverse sinus iftf© M7 :. Portion of lateral semi- circular canal Elevation caused by canalis facialis Body of incus- Canal for tensor tympani muscle Carotid canal Membrana tympani" Styloid process Facial nerve Posterior margin of jugular foramen Fig. 1074.—Section through Petrous Portion of Temporal Bone of Adult. Showing the relation of the tympanum to the middle and posterior fossae of the skull. that the head of the malleus and the body and short process of the incus are altogether above the tympanic membrane, and that they o Stock Photo")
RMPFY38J–. Cunningham's Text-book of anatomy. Anatomy. Groove for transverse sinus iftf© M7 :. Portion of lateral semi- circular canal Elevation caused by canalis facialis Body of incus- Canal for tensor tympani muscle Carotid canal Membrana tympani" Styloid process Facial nerve Posterior margin of jugular foramen Fig. 1074.—Section through Petrous Portion of Temporal Bone of Adult. Showing the relation of the tympanum to the middle and posterior fossae of the skull. that the head of the malleus and the body and short process of the incus are altogether above the tympanic membrane, and that they o
RM2AJDD02–An American text-book of physiology . decidedobstacle to ordinary vision. THE SENSE OF HEARING. 807 B. The Ear and Hearing.Anatomy and Histology of the Ear.—The organ of hearing may con-veuiently be divided into three parts : (1) The external ear, including thepinna or auride and the external auditory meatus; (2) the middle ear, calledthe tympanic cavity or ti/mpamim ; and (3) the internal ear, or labyrinth.The labyrinth is situated in the dense petrous bone, and it contains a mem-branous sac of complex form which receives the peripheral terminations of theauditory nerve. This sac, therefore,
RMPG1APX–. The anatomy of the domestic fowl . Domestic animals; Veterinary medicine; Poultry. 30 ANATOMY OF THE DOMESTIC POWL Description.—The temporal bones consist of the fused squamous and petrous temporals; they contain the essential organs of hearing. The squamous portion of the temporal bone possesses the long thin zygomatic process sometimes called the posterior orbitalis. It forms a small flattened tongue, directed forward, sometimes free, and at other times united by its superior border to the. Fig. 8.—Inferior view of the skull of a hen. i, Occipital. 2, Foramen mag- num. 3, Occipital condyle
RM2ANHD36–Education of Deaf-Mutes : A Manual for Teachers . hlea;k, apex of the petrous bone ; h, by the mastoid cells of the temporal bone ;a, the semicircular canals. Fig. 19.—The Ossicles of the Middle Eae (magnified). The partsof the malleus are lettered 3/; those of the incus /; and those of theStapes S. Mc, capitulum or head of the malleus ; 3fn, its neck ; Ml, the processusgracilis, or slender process ; the manubrium or handle. lb, body of the incus ; Is, its short, II, its long process ; lo, orbicularprocess. Sa, arch of the stapes; Sb, its base ; Scr, the crura or legs ; Sh, thehead. Fig. 20.—V
![. The depths of the ocean; a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic. Oceanography. Fig. 127.—Tooth of Oxyrhina trigodon. "Challenger" Station 276, Tropical Pacific, 2350 fathoms.. Fig. 128.—Petrous and Tympanic Bone of zlphivs cavirostris. "Challenger" Station 286, South Pacific, 2335 fathoms.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illust Stock Photo](https://c8.alamy.com/comp/PFDMYN/the-depths-of-the-ocean-a-general-account-of-the-modern-science-of-oceanography-based-largely-on-the-scientific-researches-of-the-norwegian-steamer-michael-sars-in-the-north-atlantic-oceanography-fig-127tooth-of-oxyrhina-trigodon-quotchallengerquot-station-276-tropical-pacific-2350-fathoms-fig-128petrous-and-tympanic-bone-of-zlphivs-cavirostris-quotchallengerquot-station-286-south-pacific-2335-fathoms-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illust-PFDMYN.jpg ". The depths of the ocean; a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic. Oceanography. Fig. 127.—Tooth of Oxyrhina trigodon. "Challenger" Station 276, Tropical Pacific, 2350 fathoms.. Fig. 128.—Petrous and Tympanic Bone of zlphivs cavirostris. "Challenger" Station 286, South Pacific, 2335 fathoms.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illust Stock Photo")
RMPFDMYN–. The depths of the ocean; a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic. Oceanography. Fig. 127.—Tooth of Oxyrhina trigodon. "Challenger" Station 276, Tropical Pacific, 2350 fathoms.. Fig. 128.—Petrous and Tympanic Bone of zlphivs cavirostris. "Challenger" Station 286, South Pacific, 2335 fathoms.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illust
RM2AWFNEC–A system of human anatomy, general and special . il shell) forms the anterior portion of the labyrinth, cor-responding by its apex with the ante-rior wall of the petrous bone, and byits base with the anterior depressionat the bottom of the cul de sac of themeatus auditorius internus. It con-sists of an osseous and graduallytapering canal, about one inch and ahalf in length, which makes two turnsand a half spirally around a centralaxis called the modiolus.The central axis or modiolus is large near its base where it corre- * The cochlea divided parallel with its axis, through the centre of the m
![. The depths of the ocean; a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic. Oceanography. Fig. 128.—Petrous and Tympanic Bone of zlphivs cavirostris. "Challenger" Station 286, South Pacific, 2335 fathoms.. Fig. 129.—Section of a Mangan- ese Nodule, showing a Tym- panic Bone of Mesoplodon in the Centre. "Challenger" Station 160, Southern Ocean, 2600 fathoms. green grains are supposed to be casts which have lost all trace of the enveloping calcareous chambers. The in Stock Photo](https://c8.alamy.com/comp/PFDMYD/the-depths-of-the-ocean-a-general-account-of-the-modern-science-of-oceanography-based-largely-on-the-scientific-researches-of-the-norwegian-steamer-michael-sars-in-the-north-atlantic-oceanography-fig-128petrous-and-tympanic-bone-of-zlphivs-cavirostris-quotchallengerquot-station-286-south-pacific-2335-fathoms-fig-129section-of-a-mangan-ese-nodule-showing-a-tym-panic-bone-of-mesoplodon-in-the-centre-quotchallengerquot-station-160-southern-ocean-2600-fathoms-green-grains-are-supposed-to-be-casts-which-have-lost-all-trace-of-the-enveloping-calcareous-chambers-the-in-PFDMYD.jpg ". The depths of the ocean; a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic. Oceanography. Fig. 128.—Petrous and Tympanic Bone of zlphivs cavirostris. "Challenger" Station 286, South Pacific, 2335 fathoms.. Fig. 129.—Section of a Mangan- ese Nodule, showing a Tym- panic Bone of Mesoplodon in the Centre. "Challenger" Station 160, Southern Ocean, 2600 fathoms. green grains are supposed to be casts which have lost all trace of the enveloping calcareous chambers. The in Stock Photo")
RMPFDMYD–. The depths of the ocean; a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic. Oceanography. Fig. 128.—Petrous and Tympanic Bone of zlphivs cavirostris. "Challenger" Station 286, South Pacific, 2335 fathoms.. Fig. 129.—Section of a Mangan- ese Nodule, showing a Tym- panic Bone of Mesoplodon in the Centre. "Challenger" Station 160, Southern Ocean, 2600 fathoms. green grains are supposed to be casts which have lost all trace of the enveloping calcareous chambers. The in
RM2AFTR13–. Physiology and animal mechanism : first-book of natural history, prepared for the use of schools and colleges. t. e. the Eustachian tube.—f. o. foramenovale.—v. the vestibule,—I the cochlea.—o. s. c. the semicircular canals—these canals and the cochlea constitute the labyrinth or internal ear.—n. a-the auditory or acaustic nerve.—r. the petrous bone, that is a part of thetemporal bone which derives its name from a Greek word signifying, rocky,which has been applied to it from its very remarkable hardness.—c, cells inthe temporal bone.—-/. g. glenoid cavity for the articulation of the lowerja
RMPFYCEB–. Cunningham's Text-book of anatomy. Anatomy. Opening leading into tympanic antrum Canalis facialis Canalis stapedii Tympanum External acoustic meatus Fig, 141.—Vertical Transverse Section through the Left Temporal Bone (Posterior Half of Section). A*? Osseous part of tlie auditory tube Styloid process broken off Mandibular fossa Groove for membrana tympani External acoustic meatus Mastoid air-cells. Fig. 142. in the base of the petrous part, and envelop the posterior and lateral semi- circular canals. It is by ex- tension from this part that the mastoid process is ulti- mately developed. The
RM2AG664E–. Manual of operative surgery. ^FiG. 58.—{Frazier, Jour. A. M. A.) the foramen with a twisted bit of moistened cotton or with bone wax, anddivide the artery (Fig. 56, ). Continue the separation to the foramen ovale.Step 4.—Note the dural reflection on the mandibular division of the nerveas it enters the foramen ovale (Fig. 57). Open this reflection and enlarge theopening until the upper surface of the ganglion is stripped of its dural covering.Follow the ganglion upwards until at the apex of the petrous bone the sensoryroot is seen (Fig. 58). Ophthalmic division. Superior Maxillarydivision.. H
![. The depths of the ocean : a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic. "Michael Sars" North Atlantic Deep-sea Expedition (1910); Oceanography; North Atlantic Ocean. Fig. 128.—Petrous and Tympanic Bone of ziphws cavirostris. "Challenger" Station 286, South Pacific, 2335 fathoms. Fig. 129.—Section of a Mangan- ese Nodule, showing a Tym- panic Bone of Mesoplodon in the Centre. "Challenger" Station 160, Southern Ocean, 2600 fathoms. trace green grains a Stock Photo](https://c8.alamy.com/comp/PFE52N/the-depths-of-the-ocean-a-general-account-of-the-modern-science-of-oceanography-based-largely-on-the-scientific-researches-of-the-norwegian-steamer-michael-sars-in-the-north-atlantic-quotmichael-sarsquot-north-atlantic-deep-sea-expedition-1910-oceanography-north-atlantic-ocean-fig-128petrous-and-tympanic-bone-of-ziphws-cavirostris-quotchallengerquot-station-286-south-pacific-2335-fathoms-fig-129section-of-a-mangan-ese-nodule-showing-a-tym-panic-bone-of-mesoplodon-in-the-centre-quotchallengerquot-station-160-southern-ocean-2600-fathoms-trace-green-grains-a-PFE52N.jpg ". The depths of the ocean : a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic. "Michael Sars" North Atlantic Deep-sea Expedition (1910); Oceanography; North Atlantic Ocean. Fig. 128.—Petrous and Tympanic Bone of ziphws cavirostris. "Challenger" Station 286, South Pacific, 2335 fathoms. Fig. 129.—Section of a Mangan- ese Nodule, showing a Tym- panic Bone of Mesoplodon in the Centre. "Challenger" Station 160, Southern Ocean, 2600 fathoms. trace green grains a Stock Photo")
RMPFE52N–. The depths of the ocean : a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic. "Michael Sars" North Atlantic Deep-sea Expedition (1910); Oceanography; North Atlantic Ocean. Fig. 128.—Petrous and Tympanic Bone of ziphws cavirostris. "Challenger" Station 286, South Pacific, 2335 fathoms. Fig. 129.—Section of a Mangan- ese Nodule, showing a Tym- panic Bone of Mesoplodon in the Centre. "Challenger" Station 160, Southern Ocean, 2600 fathoms. trace green grains a
RM2AWFRC1–Quain's elements of anatomy . being known as the am-pulla. The canals are compressed laterally, and measure about -^^ih. ofan inch across ; but the ampulla has a diameter of ^th of an inch. The canals differ from one another in direction, in length, and inposition with regard to the vestibule. The sufperior semicircular canal (fig.384, 3, fig. 385, 5) is nearly vertical and lies transversely ; it rises higherthan any other part of the labyiinth, and its place is indicated by a smootharched projection on the upper surface of the petrous bone. TheampuUary end of this canal is the external and an
RMPFN4C9–. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. Skull of a new lorn Child with Acrania. a, a, frontals; b, nasals; c, c, very convex zygoma- tic bones; d, small ensiform processes; e, sclla turcica; f, f, alte majores ossis sphenoidei; g, g, petrous bones; /(, basal part of the sphenoid bone; it i, condyloid parts of the occipital bone; I, I, depressed squamous parts of the occipital bone; m, small osseous lamina:, representing the parietal bones. Second Type.— The denuded surface of the basis cranii occupied by a spongy substance, instead of brain. — In most cases ve
RM2AJJTXB–A text-book of the diseases of the ear for students and practitioners . uced by the levator andtensor palati muscles, which extend from the Eustachian tube to the softpalate. The levator veli palatini (petro-salpmgo-staphylmus, Fig. 46, I) arisesfrom the inferior surface of the petrous bone bordering on the carotid canal.Its rounded belly runs parallel to the Eustachian tube, is closely applied * Compare v. Troltsch, Arch. f. Ohrenheilk., vol. ii., and Moos, Arch,f. Augen. und Ohrenheilk., vol. i. THE MUSCLES OF THE EUSTACHIAN TUBE 45 to the membranous. portion (Fig. 46, Z), which forms the fl
RM2AN2EFD–A text-book of the diseases of the ear and adjacent organs . hout lesion of thelabyrinth an effusion of blood was found in it. (3) From extensivecarious processes in the temporal bone, particularly from caries andnecrosis of the pyramid of the petrous bone (Knapp). In severalsuch cases, in which the capsule of the labyrinth was not injured,I found a few sections of the labyrinth, especially the cochlea, KESULTS. 627 covered with blackish-brown extravasated blood. In a man whodied from otitic meningitis, in whom the capsule of the labyrinthwas not eroded, on microscopic examination of the labyr
RM2AJDCN1–An American text-book of physiology . be; 5, meatus internus, containing the facial (uppermost) and auditory nerves;6 placed on the vestibule of the labyrinth above the fenestra ovalis; a, apex of the petrous bone; 6,internal carotid artery; c, styloid process; d, facial nerve, issuing from the stylo-mastoid foramen; e,mastoid process ; /, squamous part of the bone. tially of yellow elastic cartilage covered with skin, and forming at the entranceof the auditory meatus a cup-shaped depression called the concha. 17?e concha, and to some extent the whole auricle, serves a useful purposein collect
RM2AKN19X–The Journal of laryngology and otology . Fig. 3.—Shot rabbit, No. 2. Single pellet fractured the right petrous bone andcaiised slight bruising of the right pontine nucleus and tract and trapezinm.Note the curvature of the trunk concavity to the right, the head turnedtowards the right, and the right ear really approximated to the rightshoulder, both fore limbs extended, homolateral hind limb flexed, contra-lateral extended. There was also present skew deviation of the eyes —righteye down and in, left up and oat.. Fig. 4. —The brain of the rabbit. No. 2, shown in Fig. 6. The only lesion of theen
RM2AN73RP–A practical treatise on the diseases of the ear including the anatomy of the organ . ition. Voltolinisf case was one that occurred in the practice ofDr. A. Jacobi, of Berlin. The whole labyrinth was removedfrom the ear of a child that is still living. The substance ofthe cochlea was not fully united with the surrounding bonysubstance of the petrous bone, which, as Voltolini remarks, is * American Medical Times, vol. vi., p. 183. f Monatsschrift fur Ohrenheilkunde, Jahrgang IV., p. 84. CARIES AND NECIIOSIS. 439 evidence that the disease dates back to an early period in thelife of the child. Toy
RM2AWGWWK–A system of human anatomy, general and special . emovedfrom off the posterior surface of the soft palate. The Levator Palati, a moderately thick muscle, arises from theextremity of the petrous bone and from the posterior and inferioraspect of the Eustachian tube, and passing down by the side of theposterior nares spreads out in the structure of the soft palate as faras the middle line. * A side view of the muscles of the pharynx. 1. The trachea. 2. The cricoid car-tilage. 3. The crico-thyroid membrane. 4. The thyroid cartilage. 5. The thyro-hyoi-dean membrane. 6. The os hyoidcs. 7. The stylo-h
![Transactions . covered with fibrinopurulent exudate. The venous sinuses are free. Eoef oftympanum is intact; there is no evidence of extension ofthe ])urulet)f intiammafion thi-ough the petrous bone or thedura. Projecting from th(^ ])osterior sui-face of the petrous boneis a nodular tumor mass. IHV, ui. m. by 19i/> m. m. Thetumor i)rojects <S ui. m. beyond th(^ inner table, replacingthe bone and the dura at this point. The upper margin ofthe tumor extends over the internal auditory meatus, butdoes not reach the tentorium. The iiodular surface oF tlietumor is smooth and is reddened and va Stock Photo](https://c8.alamy.com/comp/2AJHCKT/transactions-covered-with-fibrinopurulent-exudate-the-venous-sinuses-are-free-eoef-oftympanum-is-intact-there-is-no-evidence-of-extension-ofthe-uruletf-intiammafion-thi-ough-the-petrous-bone-or-thedura-projecting-from-th-osterior-sui-face-of-the-petrous-boneis-a-nodular-tumor-mass-ihv-ui-m-by-19igt-m-m-thetumor-irojects-lts-ui-m-beyond-th-inner-table-replacingthe-bone-and-the-dura-at-this-point-the-upper-margin-ofthe-tumor-extends-over-the-internal-auditory-meatus-butdoes-not-reach-the-tentorium-the-iiodular-surface-of-tlietumor-is-smooth-and-is-reddened-and-va-2AJHCKT.jpg "Transactions . covered with fibrinopurulent exudate. The venous sinuses are free. Eoef oftympanum is intact; there is no evidence of extension ofthe ])urulet)f intiammafion thi-ough the petrous bone or thedura. Projecting from th(^ ])osterior sui-face of the petrous boneis a nodular tumor mass. IHV, ui. m. by 19i/> m. m. Thetumor i)rojects <S ui. m. beyond th(^ inner table, replacingthe bone and the dura at this point. The upper margin ofthe tumor extends over the internal auditory meatus, butdoes not reach the tentorium. The iiodular surface oF tlietumor is smooth and is reddened and va Stock Photo")
RM2AJHCKT–Transactions . covered with fibrinopurulent exudate. The venous sinuses are free. Eoef oftympanum is intact; there is no evidence of extension ofthe ])urulet)f intiammafion thi-ough the petrous bone or thedura. Projecting from th(^ ])osterior sui-face of the petrous boneis a nodular tumor mass. IHV, ui. m. by 19i/> m. m. Thetumor i)rojects <S ui. m. beyond th(^ inner table, replacingthe bone and the dura at this point. The upper margin ofthe tumor extends over the internal auditory meatus, butdoes not reach the tentorium. The iiodular surface oF tlietumor is smooth and is reddened and va
RM2AWFR8Y–Quain's elements of anatomy . Fig. 384.—Right bony labyrinth, vtewed from the outer side (afterSommerring). ^ The specimen here represented is prej)ared by separating piecemeal the looser sub-stance of the petrous bone from the dense walls which immediately enclose the laby-rinth. 1, the vestibule ; 2, fenestra ovalis ; 3, superior semicircular canal ; 4, horizontalor external canal; 5, ijcsterior canal; * * , ampullae of the semicircular canals ;6, first turn of the cochlea; 7, second turn ; 8, apex ; 9, fenestra rotunda. The smallerfigure in outline below shows the natural size. Fig. 385.—Vi
RM2AN3BCP–A text-book of the diseases of the ear and adjacent organs . neven capsule of thelabyrinth is visible; d, Meatus audi-torius internus ; e, Lateral sinus. In theleft cerebellar hemisphere two abscesses,the size of a hazel-nut, communicatingwith the fissure in the petrous bone. Thefacial nerve swollen and infiltrated withpus. From a woman 36 years of age,scrofulous, affected for two years withotorrhoea of the ear, and suffering, whenadmitted, from violent occipital pain andleft facial paralysis. Fourteen days afterher admission repeated bilious vomitingand fever set in, this condition lastingfor
RM2AJHC8R–Transactions . 1,. Filtli mrve. Seventh-eighth l-iS. 1- A. Secoml m rvf.niTNfs. D. Tumor. iriMiiangioeiidothelioma of petrous bone (outlined in white) present-in>4 in posterior fossa. The iipp- • trin of the tumor involves theiniTnal auditory ni<atus.. ll;-r. L. Hemanfrioen(hith<lioma of Temporal Bon« (outlined InMark). Showing tiestiuction and invasion of the bone by the tumor. :A2 JACK AND FAUNCB. entire potrons liono is porv<i(l(Ml by the growth includingthe labyrinth. Tlic iiiar-iiii ol Itic tinnor is fairly sharply(letined (Fig. -). The tunioi- passes cntiiely thiougli tlietei
RM2AJK8GX–St Thomas's Hospital reports . M.H.Lapidge, del TI- :g:rL£-ss, Hosp. Rep yd.XXIII. Position ofZygoma- nternal auditoryMeatus. Mastoid Cells. Abscess. Sigmoid Sinus Upper plant of trephine openinb. 1/ Cmt edges of Scalp.Flap thrown down Septic softenin^j into whichhoemoprha^e occurred causingrecurrence of Symptoms DdTiilsson&.CQ litb Cerebellar Abscess. 139 cerebellum in tlie direction forwards^ upwards^ and inwards^across the anterior and outer part of the lateral lobe of thecerebellum and towards the internal auditory meatus on theposterior surface of the petrous bone (see Plate I). Three tof
RM2CDM8GN–. Medical and surgical therapy . tigo, and are caused by lesion at adistance of the labyrinth, by contre-coup, or by afracture extending to the petrous bone. The laby-rinthine syndrome is dealt with in connection withwounds of the cerebellum. Radiography.—In the wounds of the occipital loberadiography will give information of the greatestimportance. Besides often showing the presence ofan unsuspected missile in the brain, it may, theoreti-cally, take the place, to some extent, of an anatomicalinvestigation, and give fairly accurate indicationsas to which portion of the lobe has been affected.T
RM2CERKT3–. Diseases of the ear; a text-book for practitioners and students of medicine. margin of the hardpalate, the fibres uniting with those of the opposite side inthe median raphe. The levator palati springs from the quadrilateral surfaceon the inferior aspect of the petrous bone, near its apex, andpasses downward, forward, and inward to its insertion on theposterior and superior surface of the soft palate. The bodyof the muscle lies along the inferior margin of the cartilagi-nous plate which forms the posterior wall of the tube, towhich it is loosely attached. It is also in contact with thefibrous
RM2CRN3RF–. Radiography and radio-therapeutics . of the jaw backwards. Thecells usually appear larger in thelower part, and smaller above.Sometimes they extend forwards above the articulation of the jaw into thebase of the zygoma. It should be remembered that the cells extend wellbehind the limit of the mastoid process. 4. The petrous bone surrounding the auditory canal, appearing as a densearea superimposed on the mastoid cells. 5. The outline of the lateral sinus should be faintly indicated runningthrough the posterior half of the cells. 6. The foramen magnum, appearing as an elliptical opening with p
RM2CEDY4X–. Text-book of anatomy and physiology for nurses. glands which secrete earwax {ceruminous glands).It is important to remember the length and direction of this canal. The membrane at the end of the canal is called the membranatympani, or membrane of the drum. It is a fibrous membranecovered with very sensitive skin on the outer surface, and mucousmembrane within (Fig. 192). The middle ear is the tympanum, or drum. It consists of a smallcavity in the petrous bone, on the inner side of the membrane of thedrum. Its height is barely half an inch, and the other measurementsare smaller still. It cont
RM2CRR1TE–. The principles and practice of roentgenological technique . Fig. 217. Fig. 2i8 Fig. 219 Figs. 217, 218, 219.—Position of head for outlininginternal ear. (Stuvers). 9. Infero-Superior Oblique (Petrous portion of Temporal) (Internal Ear) ^^ Essential Features Internal auditory meatus Semicircular canals Vestibulae Cochlea Tympanum The petrous bone is projected in the squa-mous portion of the temporal bone. To avoidtlie projection of middle ear structures overthe ductus semicircularis, the central ray ispassed to the side of the median line.
RM2CEN61E–. Diseases of the ear : a text-book for practitioners and students of medicine. squamous suture. Looking atthe cranial surface, we find that the petrous portion unites 12 THE ANATOMY AND PHYSIOLOGY OF THE EAR. with the inner plate of the squama, forming the petro-squa-mous suture. It is clear from the foregoing description that the base ofthe pyramid is made up of the outer surface of the mastoidand of that portion of the petrous bone lying below the petro-squamous suture and opposite the tympanic ring. This lastregion corresponds to the inner wall of the tympanic cavity,or the fundus of the e
![. Text-book of anatomy and physiology for nurses. petrous bone calledthe facial or Fallopian canal^(which brings it close to themiddle ear). Emerging fromthe skull it passes forward,through the parotid gland, and divides into many branches supply-ing all the muscles of expression. Clinical note.—If this nerve is paralyzed, the side of the face supplied by theinjured nerve droops and is useless, and the eye fails to close. The face will be drawn toward the un-m]uxed side by the opposite nerve; this is plainly seen,if the patiejit smiles, or attempts to whistle. The eighth, or auditory (acoustic Stock Photo](https://c8.alamy.com/comp/2CEE0D4/text-book-of-anatomy-and-physiology-for-nurses-petrous-bone-calledthe-facial-or-fallopian-canalwhich-brings-it-close-to-themiddle-ear-emerging-fromthe-skull-it-passes-forwardthrough-the-parotid-gland-and-divides-into-many-branches-supply-ing-all-the-muscles-of-expression-clinical-noteif-this-nerve-is-paralyzed-the-side-of-the-face-supplied-by-theinjured-nerve-droops-and-is-useless-and-the-eye-fails-to-close-the-face-will-be-drawn-toward-the-un-m-uxed-side-by-the-opposite-nerve-this-is-plainly-seenif-the-patiejit-smiles-or-attempts-to-whistle-the-eighth-or-auditory-acoustic-2CEE0D4.jpg ". Text-book of anatomy and physiology for nurses. petrous bone calledthe facial or Fallopian canal^(which brings it close to themiddle ear). Emerging fromthe skull it passes forward,through the parotid gland, and divides into many branches supply-ing all the muscles of expression. Clinical note.—If this nerve is paralyzed, the side of the face supplied by theinjured nerve droops and is useless, and the eye fails to close. The face will be drawn toward the un-m]uxed side by the opposite nerve; this is plainly seen,if the patiejit smiles, or attempts to whistle. The eighth, or auditory (acoustic Stock Photo")
RM2CEE0D4–. Text-book of anatomy and physiology for nurses. petrous bone calledthe facial or Fallopian canal^(which brings it close to themiddle ear). Emerging fromthe skull it passes forward,through the parotid gland, and divides into many branches supply-ing all the muscles of expression. Clinical note.—If this nerve is paralyzed, the side of the face supplied by theinjured nerve droops and is useless, and the eye fails to close. The face will be drawn toward the un-m]uxed side by the opposite nerve; this is plainly seen,if the patiejit smiles, or attempts to whistle. The eighth, or auditory (acoustic
RM2CEE68B–. Text-book of anatomy and physiology for nurses. our sharp turns after entering the carotidcanal in the petrous bone, and by this means the force of the current in thislarge vessel is modified before it reaches the delicate tissues of the brain. Theinternal jugular vein and vagus nerve accompany it in the neck. The external carotid artery supplies the face, and front of theneck and scalp (Fig. 127). Principal branches.—Superior thyroid, to the thyroid glandand larynx. Lingual, to the tongue and tonsil. Facial (or externalmaxillary) to the face, soft palate and tonsil. Occipital, to the backof
RM2CRNEXJ–. Radiography and radio-therapeutics . of the mastoid process. 4. The petrous bone surrounding the auditory canal, appearing as a densearea superimposed on the mastoid cells. 5. The outline of the lateral sinus should be faintly indicated runningthrough the posterior half of the cells. 6. The foramen magnum, appearing as an elliptical opening with part ofthe first vertebra crossing it. 7. The outline of the pinna of the ear. Acute mastoiditis shows the following departures from the above description : 1. The air cells are obscured, but can still be faintly seen. 2. The outline of the lateral s
RM2CEN5C9–. Diseases of the ear : a text-book for practitioners and students of medicine. ony margin of the hardpalate, the fibres uniting with those of the opposite side inthe median raphe. TJie levator palati springs from the quadrilateral surfaceon the inferior aspect of the petrous bone, near its apex; andpasses downward, forward, and inward to its insertion on theposterior and superior surface of the soft palate. The bodyof the muscle lies along the inferior margin of the cartilagi-nous plate which forms the posterior wall of the tube, towhich it is loosely attached. It is also in contact with thef
RM2CRR1PM–. The principles and practice of roentgenological technique . Fig. 2i8 Fig. 219 Figs. 217, 218, 219.—Position of head for outlininginternal ear. (Stuvers). 9. Infero-Superior Oblique (Petrous portion of Temporal) (Internal Ear) ^^ Essential Features Internal auditory meatus Semicircular canals Vestibulae Cochlea Tympanum The petrous bone is projected in the squa-mous portion of the temporal bone. To avoidtlie projection of middle ear structures overthe ductus semicircularis, the central ray ispassed to the side of the median line.. Posture Trunk proneOrbit to plate- degrees. -sagittal plane at
RM2CHRMKE–. Quain's elements of anatomy . g known as the am-pulla. The canals are compressed laterally, and measure about ^-^i ofan inch across ; but the ampulla has a diameter of y^th of an inch. The canals differ from one another in direction, in length, and inposition with regard to the vestibule. The stqjerior semicircular canal (fig.384, 3, fig. 385, 5) is nearly vertical and lies transversely ; it rises higherthan any other part of the labyrinth, and its place is indicated by a smootharched projection on the upper surface of the petrous bone. Theampullary end of this canal is the external and an
RM2CDFD14–. The pathological anatomy of the ear . s of primary epithelial cancer of the temporalbone, of which two have been reported, and in all ofthem the origin of the growth was the tympanic mu-cous membrane.^ Fig. 9 shows the extent of the destruction of thebone in one of these cases, seen from the inside. A list of all the malignant tumors known to me is confined tcfive cases described by Toynbee ^ (carcinoma), one by Gerliard ^(carcinoma of the left petrous bone), one by Billroth* (without au-topsy), two by Wilde ^ (osteosarcoma), one by Travers^ (without 1 Archiv f. Ohrenheilkunde, ix.. S. 208,
RM2CE37GG–. A treatise on practical anatomy: for students of anatomy and surgery . h the cavernous sinus (8); 7, inferior petro-sal sinus, joining the eavet-imus sinus (S) with the jugular vein (9); 8, cavernous sinus;9, internal jugular vein formed by two sinuses (o and 7); lU, occipital sinus; 11, venaeGaleni; 12, vein passing to nasal cavity; 13, foramen otecain. the petrous bone, and terminate at the posterior laceratedforamina. OccipitO:!.—Two small sinuses from the sides of theforamen magnum; they empty into the lateral sinusesnear the point of their communication with the superiorlongitudinal. Ca
RM2CRP7WP–. Radiography, x-ray therapeutics and radium therapy . fthe cells. 6. The foramen magnum, appear-ing as an elliptical opening with part of the first vertebra crossing it. 7. The outline of the pinna of the ear.Acute inastoiditis shows the following departures from the above description : 1. The air cells are obscured, but can still be faintly seen. 2. The outline of the lateral sinus may be a little more defined than normally. 3. The petrous bone is denser. 4. The whole mastoid region is denser. When one gets an absolutely normal mastoid on one side, and the otherside presents the appearance j
RM2CE5F8F–. Some points in the surgery of the brain and its membranes . f eyeballs ; deafness of the right ear ;occasional vomiting. Headache in right occipital region, increased by mentalexertion ; inco-ordination of right hand j right-sided hemiataxia ? tendency to fall tothe right and rotate to the left ; head depressed towards the right shoulder. Operation in Two Stages.—August I2, 1902.—I removed the bone over the rightlateral lobe of the cerebellum. August 16.—The dura was opened and the tumourremoved ; the latter was firmly attached to the dura mater on the posterior surfaceof the petrous bone. O
RM2CRM13B–. Radiography, x-ray therapeutics and radium therapy . ofthe cells. 6. The foramen magnum, appear-ing as an elliptical opening with part of the first vertebra crossing it. 7. The outline of the pinna of the ear.Acute mastoiditis shows the following departures from the above description : 1. The air cells are obscured, but can still be faintly seen. 2. The outline of the lateral sinus may be a little more defined than normally. 3. The petrous bone is denser. 4. The whole mastoid region is denser. When one gets an absolutely normal mastoid on one side, and the otherside presents the appearance j
RM2CRJP3A–. Radiography, X-ray therapeutics and radium therapy . ofthe cells. 6. The foramen magnum, appear-ing as an elliptical opening with part of the first vertebra crossing it. 7. The outline of the pinna of the ear.Acute mastoiditis shows the following departures from the above description : 1. The air cells are obscured, but can still be faintly seen. 2. The outline of the lateral sinus may be a little more defined than normally. 3. The petrous bone is denser. I. The whole mastoid region is denser. When one gets an absolutely normal mastoid on one side, and the otherside presents the appearance j
RM2CHRM30–. Quain's elements of anatomy . Fig. 384.—Right bony labyrinth, viewed froji the outer side (afterSommerriug). ^ Tlie specimen here represented is prej)ared by separating piecemeal the looser sub-stance of the petrous bone from tlie dense walls which immediately enclose the laby-rinth. 1, the vestibule ; 2, fenestra ovalis ; 3, superior semiciixular canal ; 4, horizontalor external canal; 5, posterior canal; * * *, amjjullfe of the semicircular canals ;^, first turn of the cochlea; 7, second turn ; 8, aj^ex ; 9, fenestra rotunda. The smallerfigui-e in outline below shows the natural size. Fig.
RM2CDX75K–. Kirkes' handbook of physiology . Fig. 433- Fig. 434. Fig. 433.—Right Bony Labyrinth. Viewed from the Outer Side. The specimen here representedis prepared by separating piecemeal the looser substance of the petrous bone from the dense wallswhich immediately enclose the labyrinth. 1, The vestibule; 2, fenestra ovalis; 3, superior semi-circular canal; 4, horizontal or external canal; 5, posterior canal; *, ampullae of the semicircularcanals; 6, first turn of the cochlea; 7, second turn; 8, apex; 9, fenestra rotunda. The smallerfigure in outline below shows the natural size. X 2.5. (Sommering.)
![. The pathological anatomy of the ear . Fig. 53. Fig. 51. Rupture of the Drum-membrane, from a blow on the ear. From Toyn-bee, Diseases of the Ear, p. 182. Fig. 52. Rupture of an atrophied Drum-membrane, from violent inflation byYalsal-as method. From Toynbee, Ibid., p. ]83. Fig. 53. Rupture of the Drum-membrane, from a person who was hanged. Seenfrom the tympanum. indirectly from air pressure (explosion, box on theear, diving, and from whooping cough); also, fromfractures of the skull, and from violent concus-sions of the petrous bone. The edges of a rupturefrom a direct wound are generally i Stock Photo](https://c8.alamy.com/comp/2CDCM2R/the-pathological-anatomy-of-the-ear-fig-53-fig-51-rupture-of-the-drum-membrane-from-a-blow-on-the-ear-from-toyn-bee-diseases-of-the-ear-p-182-fig-52-rupture-of-an-atrophied-drum-membrane-from-violent-inflation-byyalsal-as-method-from-toynbee-ibid-p-83-fig-53-rupture-of-the-drum-membrane-from-a-person-who-was-hanged-seenfrom-the-tympanum-indirectly-from-air-pressure-explosion-box-on-theear-diving-and-from-whooping-cough-also-fromfractures-of-the-skull-and-from-violent-concus-sions-of-the-petrous-bone-the-edges-of-a-rupturefrom-a-direct-wound-are-generally-i-2CDCM2R.jpg ". The pathological anatomy of the ear . Fig. 53. Fig. 51. Rupture of the Drum-membrane, from a blow on the ear. From Toyn-bee, Diseases of the Ear, p. 182. Fig. 52. Rupture of an atrophied Drum-membrane, from violent inflation byYalsal-as method. From Toynbee, Ibid., p. ]83. Fig. 53. Rupture of the Drum-membrane, from a person who was hanged. Seenfrom the tympanum. indirectly from air pressure (explosion, box on theear, diving, and from whooping cough); also, fromfractures of the skull, and from violent concus-sions of the petrous bone. The edges of a rupturefrom a direct wound are generally i Stock Photo")
RM2CDCM2R–. The pathological anatomy of the ear . Fig. 53. Fig. 51. Rupture of the Drum-membrane, from a blow on the ear. From Toyn-bee, Diseases of the Ear, p. 182. Fig. 52. Rupture of an atrophied Drum-membrane, from violent inflation byYalsal-as method. From Toynbee, Ibid., p. ]83. Fig. 53. Rupture of the Drum-membrane, from a person who was hanged. Seenfrom the tympanum. indirectly from air pressure (explosion, box on theear, diving, and from whooping cough); also, fromfractures of the skull, and from violent concus-sions of the petrous bone. The edges of a rupturefrom a direct wound are generally i
RMRD56F6–. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. RODENTIA. 391 through an ascending canal, which enters the cavit} of the skull close to the sella turcica, arriving at the brain much in the same manner as the internal carotid of the human subject. This branch is smaller than the vertebral artery. The other or external branch enters the cranium through a canal that opens upon the anterior surface of the petrous bone, and divides into the middle meningeal and ophthal- mic arteries. In the dormouse the distribution of the internal carotid very nearly resembles what is des
RMRN5KYH–. Anatomy, descriptive and applied. Anatomy. 1138 THE ORGANS OF SPECIAL SENSE petrous bone; it is the longest of the three, measuring from 18 to 22 mm.; its ampul- iated end commences at the lower and back part of the vestibule, its opposite end joining to form the common canal already mentioned. In the wall of the ampulla of the posterior canal are a number of small openings (macula cribrosa inferior) for the passage of nerves to the ampulla. The lateral or horizontal canal (canalis semicircidaris lateralis) is the shortest of the three. It measures from 12 to 15 mm., and its arch is directed
![. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. EASTMAN : SHARKS' TEETH AND CETACEAN BONES. 91 this aspect is identifiable with the petrous bone of other mammals, and has the usual pointed anterior extremity (9). Immediately behind this is seen a tumid shelf-like projection which overhangs and partly conceals the anterior process of the bulla, together with its " accessory ossicle," being in fact slightly fused with the latter underneath. This project- ing portion of the front margin is called the processus anterior petrosi (10) ; and underneath Stock Photo](https://c8.alamy.com/comp/RGE42H/bulletin-of-the-museum-of-comparative-zoology-at-harvard-college-zoology-zoology-eastman-sharks-teeth-and-cetacean-bones-91-this-aspect-is-identifiable-with-the-petrous-bone-of-other-mammals-and-has-the-usual-pointed-anterior-extremity-9-immediately-behind-this-is-seen-a-tumid-shelf-like-projection-which-overhangs-and-partly-conceals-the-anterior-process-of-the-bulla-together-with-its-quot-accessory-ossiclequot-being-in-fact-slightly-fused-with-the-latter-underneath-this-project-ing-portion-of-the-front-margin-is-called-the-processus-anterior-petrosi-10-and-underneath-RGE42H.jpg ". Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. EASTMAN : SHARKS' TEETH AND CETACEAN BONES. 91 this aspect is identifiable with the petrous bone of other mammals, and has the usual pointed anterior extremity (9). Immediately behind this is seen a tumid shelf-like projection which overhangs and partly conceals the anterior process of the bulla, together with its " accessory ossicle," being in fact slightly fused with the latter underneath. This project- ing portion of the front margin is called the processus anterior petrosi (10) ; and underneath Stock Photo")
RMRGE42H–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. EASTMAN : SHARKS' TEETH AND CETACEAN BONES. 91 this aspect is identifiable with the petrous bone of other mammals, and has the usual pointed anterior extremity (9). Immediately behind this is seen a tumid shelf-like projection which overhangs and partly conceals the anterior process of the bulla, together with its " accessory ossicle," being in fact slightly fused with the latter underneath. This project- ing portion of the front margin is called the processus anterior petrosi (10) ; and underneath
![. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. EASTMAN: sharks' TEETH AND CETACEAN BONES. 91 this aspect is identifiable with the petrous bone of other mammals, and has the usual pointed anterior extremity (9). Immediately behind this is seen a tumid shelf-like projection wliich overhangs and partly conceals the anterior process of the bulla, together with its " accessory ossicle," being in fact slightly fused with the latter underneath. This project- ing portion of the front margin is called the process7is anterior petrosi (10) ; and underneath it passe Stock Photo](https://c8.alamy.com/comp/RGFW0D/bulletin-of-the-museum-of-comparative-zoology-at-harvard-college-zoology-eastman-sharks-teeth-and-cetacean-bones-91-this-aspect-is-identifiable-with-the-petrous-bone-of-other-mammals-and-has-the-usual-pointed-anterior-extremity-9-immediately-behind-this-is-seen-a-tumid-shelf-like-projection-wliich-overhangs-and-partly-conceals-the-anterior-process-of-the-bulla-together-with-its-quot-accessory-ossiclequot-being-in-fact-slightly-fused-with-the-latter-underneath-this-project-ing-portion-of-the-front-margin-is-called-the-process7is-anterior-petrosi-10-and-underneath-it-passe-RGFW0D.jpg ". Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. EASTMAN: sharks' TEETH AND CETACEAN BONES. 91 this aspect is identifiable with the petrous bone of other mammals, and has the usual pointed anterior extremity (9). Immediately behind this is seen a tumid shelf-like projection wliich overhangs and partly conceals the anterior process of the bulla, together with its " accessory ossicle," being in fact slightly fused with the latter underneath. This project- ing portion of the front margin is called the process7is anterior petrosi (10) ; and underneath it passe Stock Photo")
RMRGFW0D–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. EASTMAN: sharks' TEETH AND CETACEAN BONES. 91 this aspect is identifiable with the petrous bone of other mammals, and has the usual pointed anterior extremity (9). Immediately behind this is seen a tumid shelf-like projection wliich overhangs and partly conceals the anterior process of the bulla, together with its " accessory ossicle," being in fact slightly fused with the latter underneath. This project- ing portion of the front margin is called the process7is anterior petrosi (10) ; and underneath it passe
RMRJYB1X–. An atlas of human anatomy for students and physicians. Anatomy. 68 THE SKULL AND THE BONKS OF THE SKULL Superior semicircular canal —Canalis semicircularis superior Anterior surface of petrous portion -Facies anterior pyramidis Vestibule of the labyrinth Vestibulum labyrinthi Geniculum of the aqueduct of Fallopius Geniculum canalis facialis Oochleariform process Processus cochleariformis Cochlea Cochlea Carotid canal Canalis caroticus. External semicircular canal Canalis semicircularis lateralis Superior border of the petrous bone 'Angulus supers ir pj I Posterior semicircular canal Canalis
RMRN7WKG–. Anatomy of the cat. Cats; Mammals. THE EAR. 425 with the middle ear by the fenestra cochlear and the fenestra vcstibuli, which have been described in the account of the petrous bone (page 33). In the recent state the fenestra vestibuH is closed by the base of the stapes, while the fenestra cochlea: is covered by a delicate membrane,—so that the in- ternal ear forms a closed cavity. It is possible to distinguish a bony labyrinth and a membranous labyrinth (Fig. 173), the former being the cavity in the petrous bone, while the latter is the real auditory organ, situated within the cavity. The m
RMRJYB1G–. An atlas of human anatomy for students and physicians. Anatomy. External semicircular canal Canalis semicircularis lateralis Superior border of the petrous bone 'Angulus supers ir pj I Posterior semicircular canal Canalis semicircularis posterior Posterior surface of the petrous bone Facies posterior pyramidis Promontory Promontorium Aqueduct of Fallopius Canalis facialis s. Fossula of the fenestra rotunda, or fossula rotunda Fossula fenestra; cochlea; Fenestra ovalis Fenestra vestibuli Fig. 139.—The Bony Labyrinth, Labyrinthus Osseus, shown in the Left Petrous Portion. Seen obliquely from i
RMREFE7T–. The comparative anatomy of the domesticated animals. Veterinary anatomy. 66 THE BONES. shows the continuation of the foramen. These three faces Fig. 38.. POSTERIOR ASPECT OF HORSE'S SKULL. , Occipital tuberosity; 2, fora- men magnum; 3, 3, occipital condyles ; 4, 4, styloid pro- cesses ; 5, 5, petrous bone; 6, basilar process; 7, pterygoid fissure of the sphenoid bone ; 8, foramen lacerum ; 9, 9, supra- condyloid, or anterior mastoid process ; 10, 10, articular emi- nence, or temporal condyle; 11, body of sphenoid bone; 12, ptery- goid process ; 13, ethmoid bone ; 14, temporal bone and sphen
RM2AN6XBR–A practical treatise on the diseases of the ear including the anatomy of the organ . aqueducts open by one ex*tremity into the labyrinth, and by the other on the surface ofthe petrous portion of the temporal bone. One opens into 470 COCHLEA. the vestibule, and has already been alluded to, and is calledthe aqueductus vestibuli; the other enters into the tympanicscala of the cochlea, and is called the aqueductus cochleae.The length of the aqueduct of the vestibule is about one-thirdof an inch ; that of the aqueduct of the cochlea is about one-quarter of an inch. The aqueduct of the vestibule beg
RM2AKB4N9–Surgical anatomy : a treatise on human anatomy in its application to the practice of medicine and surgery . em into their convolutions. The Olfactory Tract and Bulb are seen occupying the olfactory sulcus. Temporal Lobes.—The inferior surface of the temporal or temporo-sphenoidlobe, is slightly convex anteriorly and concave posteriorly, and thus accommodatesitself in front to the portions of the middle cranial fossa formed by the greaterwing of the sphenoid and the anterior surface of the petrous portion of the tem-poral bone, and behind to the convex tentorium. It presents the termination oft
![Atlas and epitome of traumatic fractures and dislocations . ence will teach us that an operationshould be performed the moment the symptoms of meningitis begin.The base of the skull should be exposed through an opening in thefrontal bone and drainage instituted. I have observed one case inwhich this procedure at least should have been attempted.—Ed.] the dorsal position, or if the posterior portion of the nosehas been injured, the blood may flow down into the pharynxand be swallowed, and later give rise to hematemesis. Infractures involving the middle fossa of the skull and ofthe petrous porti Stock Photo](https://c8.alamy.com/comp/2ANHYFY/atlas-and-epitome-of-traumatic-fractures-and-dislocations-ence-will-teach-us-that-an-operationshould-be-performed-the-moment-the-symptoms-of-meningitis-beginthe-base-of-the-skull-should-be-exposed-through-an-opening-in-thefrontal-bone-and-drainage-instituted-i-have-observed-one-case-inwhich-this-procedure-at-least-should-have-been-attempteded-the-dorsal-position-or-if-the-posterior-portion-of-the-nosehas-been-injured-the-blood-may-flow-down-into-the-pharynxand-be-swallowed-and-later-give-rise-to-hematemesis-infractures-involving-the-middle-fossa-of-the-skull-and-ofthe-petrous-porti-2ANHYFY.jpg "Atlas and epitome of traumatic fractures and dislocations . ence will teach us that an operationshould be performed the moment the symptoms of meningitis begin.The base of the skull should be exposed through an opening in thefrontal bone and drainage instituted. I have observed one case inwhich this procedure at least should have been attempted.—Ed.] the dorsal position, or if the posterior portion of the nosehas been injured, the blood may flow down into the pharynxand be swallowed, and later give rise to hematemesis. Infractures involving the middle fossa of the skull and ofthe petrous porti Stock Photo")
RM2ANHYFY–Atlas and epitome of traumatic fractures and dislocations . ence will teach us that an operationshould be performed the moment the symptoms of meningitis begin.The base of the skull should be exposed through an opening in thefrontal bone and drainage instituted. I have observed one case inwhich this procedure at least should have been attempted.—Ed.] the dorsal position, or if the posterior portion of the nosehas been injured, the blood may flow down into the pharynxand be swallowed, and later give rise to hematemesis. Infractures involving the middle fossa of the skull and ofthe petrous porti
RM2AN7TRW–The treatment of fractures . Fig. 19.—Fracture of the base of the skull, involving the middle and posterior fossse on theleft (Warren Museum, 5106). tory meatus. Any of these signs is conclusive evidencethat the base of the skull is fractured and that there is alesion of the brain. Lesions of the facial (seventh) andauditory (eighth) nerves lying within the bones occur. Lesionsare likewise reported of the fifth nerve, because of its lyingupon the petrous portion of the temporal bone. Subconjunc-tival hemorrhage may appear, owing to the blood working itsway forward and through the sphenoidal fi
RM2ANJ1FD–Atlas and epitome of traumatic fractures and dislocations . f bone which act as a kind ofbuttress. Thus a lateral support is supplied by the petrousportion of the temporal bone and the junction of the edgesof the wings of the sphenoid; behind the skull is bracedby the occipital crest^ and in front by the frontal crest.These structures converge toward the clivus and the ante-rior margin of the foramen magnum. It has been learnedby observation that fractures of the skull preferably followthe intervals between these supporting buttresses (Felizet).It is not to be denied, however, that the petrous
RM2AKHP59–Outlines of comparative physiology touching the structure and development of the races of animals, living and extinct : for the use of schools and colleges . External surface 120 BONES OF THE SKULL. Fig-87-. Internal surface. Fig. 88. 14. Figs. 88 and 89 represent the anterior and posterior surfacesof the petrous portion of the temporal bone in which the in-ternal ear is situated. Theseparts, consisting of the tym-panum and its ossicles, thelabyrinth with the vestibule,semicircular canals, and coch-lea, have been already de-scribed in our section on theinternal ear. § 150 to 154. [§ 245. Fig.
RM2AJGM7T–A text-book of the diseases of the ear for students and practitioners . preparationsthe cavity of the cochlea communicates with the vestibule by a spaciousopening (Fig. 303, v), and with the tympanic cavity by means of the roundwindow. With its spiral windings, the cochlea is so embedded in the petrous portionof the temporal bone between the internal meatus and the carotid canal thatits base is turned inwards towards the internal auditory canal and its apex(cupola) outwards towards the tympanic cavity. On vertical sections of the cochlea (Fig. 307), one sees, in addition to theopenings of its
RM2AGD0EC–. Local and regional anesthesia; with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. Fig. 209.—Position and size of area of skin anesthesia for injection of gasserian ganglion. (Hartel.) outward, then upward and inward, traverses the canal of the foramenovale in diagonal direction, and thereby arrives in the direction of theinclination of the petrous portion of the temporal bone (Fig. 206,b, c, d). 584 LOCAL ANESTHESLA. Fig. 2IO.—Hartel route,
RM2AFRNY9–. A treatise on anatomy, physiology and hygiene : designed for colleges, academies and families. ed obliquely across the area of that tube.It is concave toward the meatus, and convex toward thetympanum. 949. The tympanum consists of an irregular bony cavity,situated within the temporal bone. It is bounded externallyby the membrana tympani; internally by its inner wall ; andin its circumference by the petrous portion of the temporal 947. What is the meatus j^uditorius ? What is found in this canal ? What!5 their use ? Where is the wax of the ear secreted. 948 Describe themembrana tympani. 949.
RM2AXFFAX–A manual of anatomy . (arcuata) pass through the raphe to the oppo-site side and proceed upward to the thalamus where new fibers ariseand pass to the sensor area of the cerebral cortex. Some fibers passfrom the sensor to the motor nucleus thus establishing a simplereflex arc. The trigeminal nerve is attached to the brain at the middle of the 444 THE NERVE SYSTEM lateral border of the pons. It consists of two roots, the larger, sensorand the smaller, motor. As these two roots pass forward and reachthe apex of the petrous portion of the temporal bone the sensor rootexhibits an enlargement, the s
RM2AKCD05–Elements of animal physiology, chiefly human . is lined bymucous membrane, studded with the ceruminous or waxglands. (2.) The tympanum, or middle ear, (which consists ofan irregular cavity in the petrous part of the temporalhone), bounded on its outer side by the memhranatympani, and on its inner side by the outer wall of thehony lahyrinth. It is traversed by a chain of movablebones, consisting of the malleus or hammer bone, theincus or anvil bone, the stapes or stirrup bone, by which THE SEMICIRCULAR CANALS. IGl the vibrations are conveyed from the external air,through the middle ear, to the
![Atlas and text-book of topographic and applied anatomy . Even then,however, the numerous vessels passing from the dura into the bones are torn across. In generalthe dura is more intimately attached to the base than to the cranial vault, the adhesion being mostfirm at the cribriform plate of the ethmoid, the sella turcica, the clivus, and the petrous portion ofthe temporal bone [which in part explains the infrequency of extra-dural collections of bloodand pus at these situations.—Ed.]. If the excised dura is placed in water, numerous vessels areseen upon its outer surface, while the inner surfa Stock Photo](https://c8.alamy.com/comp/2AJ9TBY/atlas-and-text-book-of-topographic-and-applied-anatomy-even-thenhowever-the-numerous-vessels-passing-from-the-dura-into-the-bones-are-torn-across-in-generalthe-dura-is-more-intimately-attached-to-the-base-than-to-the-cranial-vault-the-adhesion-being-mostfirm-at-the-cribriform-plate-of-the-ethmoid-the-sella-turcica-the-clivus-and-the-petrous-portion-ofthe-temporal-bone-which-in-part-explains-the-infrequency-of-extra-dural-collections-of-bloodand-pus-at-these-situationsed-if-the-excised-dura-is-placed-in-water-numerous-vessels-areseen-upon-its-outer-surface-while-the-inner-surfa-2AJ9TBY.jpg "Atlas and text-book of topographic and applied anatomy . Even then,however, the numerous vessels passing from the dura into the bones are torn across. In generalthe dura is more intimately attached to the base than to the cranial vault, the adhesion being mostfirm at the cribriform plate of the ethmoid, the sella turcica, the clivus, and the petrous portion ofthe temporal bone [which in part explains the infrequency of extra-dural collections of bloodand pus at these situations.—Ed.]. If the excised dura is placed in water, numerous vessels areseen upon its outer surface, while the inner surfa Stock Photo")
RM2AJ9TBY–Atlas and text-book of topographic and applied anatomy . Even then,however, the numerous vessels passing from the dura into the bones are torn across. In generalthe dura is more intimately attached to the base than to the cranial vault, the adhesion being mostfirm at the cribriform plate of the ethmoid, the sella turcica, the clivus, and the petrous portion ofthe temporal bone [which in part explains the infrequency of extra-dural collections of bloodand pus at these situations.—Ed.]. If the excised dura is placed in water, numerous vessels areseen upon its outer surface, while the inner surfa
RM2AXHGJH–A manual of anatomy . aryngopalatinus arises from the soft palate and isinserted into the dorsal margin of the thyreoid cartilage near thern. stylopharyngeus. Action.—Draws the pharynx over the bolus of food in deglutition. Nerve Supply.—Accessory through the pharyngeal plexus. The m. salpingopharyngeus is a small muscle that arises from theinferior part of the auditory (Eustachian) tube and blends with them. pharyngopalatinus. The m. levator veli palatini arises from the inferior part of thecartilaginous auditory tube and from the apex of the petrous portion 158 MYOLOGY of the temporal bone.
RM2AFK7F6–. Local and regional anesthesia : with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and on other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. he inequalities of the pyramid ofthe petrous portion of the temporal bone, of the foramen lacerum, or ofthe fossa pterygoidea can easily occur if one confines himself exclusivelyto the angle between the lamina externa of the wing of sphenoid and theplanum infratemporale. One should consider always that the fora- THE HEAD, SCALP, CRANIUM, BRAIN, AND FACE 53
RM2AG8DWW–. A treatise on anatomy, physiology, and hygiene : designed for colleges, academies, and families. placed obliquely across the area of that tube.It is concave toward the meatus, and convex toward thetympanum. 949. The tympanum consists of an irregular bony cavity,situated within the temporal bone. It is bounded externallyby the membrana tympani ; internally by its inner wall ; andin its circumference by the petrous portion of the temporal 947. What is the meatus auditorius ? What is found in this canal ? Whatis their use ? Where is the wax of the ear secreted. 948. Describe themembrana tympani
RM2AJGEBE–A text-book of the diseases of the ear for students and practitioners . ate of blood was found in the internal ear. (3) From extensive carious processes in the temporal bone,especially in caries and necrosis of the petrous portion (Knapp).Li several cases belonging to this category, in which the laby- HEMORRHAGES INTO THE LABYRINTH 729 rinthine capsule remained uninjured, the author found differentportions of the labyrinth, as, for instance, the cochlea, coveredwith a blackish-brown, bloody extravasate. In a man who haddied of meningitis secondary to otitis, and in whom thelabyrinthine capsule
RM2AWF2RD–A text-book on diseases of the ear, nose and throat . insertion of the masseter muscle (Fig. 11, e), and the glenoid fossaand the tympanic bone (Fig. 11, /, i) complete the posterior maxillaryarticular surface. The inner surface of the temporal bone of the adult is also importantfor otological study. It will be seen that the j)etrous pyramid of thebone divides the middle from the posterior cranial fossa, the posterior ANATOMY AND PHYSIOLOGY OF EXTERNAL AUDITORY CANAL. 11 pyramidal surface being the anterior wall of the posterior fossa, and theanterior surface of the petrous pyramid, containing
RM2AWF099–A text-book on diseases of the ear, nose and throat . insertion of the masseter muscle (Fig. 11, e), and the glenoid fossaand the tympanic bone (Fig. 11, /, i) complete the posterior maxillaryarticular surface. The inner surface of the temporal bone of the adult is also importantfor otological study. It will be seen that the j)etrous pyramid of thebone divides the middle from the posterior cranial fossa, the posterior ANATOMY AND PHYSIOLOGY OF EXTERNAL AUDITORY CANAL. 11 pyramidal surface being the anterior wall of the posterior fossa, and theanterior surface of the petrous pyramid, containing
RM2AWG881–A system of human anatomy, general and special . the commencement ofthe internal jugular veins. The Circular sinus (sinus of Ridley)is situated in the sella turcica, surround-ing the pituitary gland, and communi-cating on each side with the cavernoussinus. The posterior segment is largerthan the anterior. The Superior petrosal sinuses pass ob-liquely backwards along the attachedborder of the tentorium, on the uppermargin of the petrous portion of the tem-poral bone, and establish a communi-cation between the cavernous and lateralsinus at each side. They receive oneor two cerebral veins from th
RM2AJK90K–St Thomas's Hospital reports . mastoid or petrous bones, is most likely to be found. When the disc of bone was taken away the dura bulgedunder plus pressure into the opening. On incising tlie durathe cerebellum bulged without pulsation into the trephineopening. A trocar and cannula were then passed into the DESCRIPTION OF PLATE I, Illustrating Dr. Aclauds and Mr. Ballances Case of Cere-bellar Abscess secondary to Otitis Media Suppurativatreated successfully by Operation. The drawing shows the appearance of a transverse sectionof a shiill and brain, made to illustrate this paper. Tlie exact lin
RM2AWJYFJ–Operative surgery, for students and practitioners . ura mater and across the GASSERIAX GAXGLIOX, ETC. 51 upper border of the petrous portion of the temporal bone, near itsapex, into the middle fossa of the skull. As the roots pass over theupper border of the petrous portion, they lie beneath the superiorpetrosal sinus, extradural: i.e., between the dura mater and thebase of the skull. Upon reaching the front surface of the petrousportion of the temporal bone the sensory root presents a swelling,the Gasserian ganglion. The motor root takes no part in the forma-tion of this ganglion, but lies un
RM2AGD23A–. Local and regional anesthesia; with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. e. into foramen(Hartel.) quirement of adherence to the so-called axis of the trigeminus; thatis, a straight Hne going from the middle of the impressio trigeminiot the petrous portion of the temporal bone through the middle ofthe foramen ovale (Figs. 204, 205). Only a cannula introduced intothe skull in this direction avoids collateral injuries of the tissues a
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