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Hint: The Bowman’s capsule is the first structure involved in blood filtration inside the kidney of human beings. It is the expansion of the renal tubule that surrounds a tangled cluster of blood capillaries called glomerulus. It is a cup-like structure that consists of two layers made of a single layer of flat cells with irregular boundaries.
Complete answer: The kidney is the bean-like organ present in a pair in the lower abdominal portion of the human body. It acts as a blood filter and produces urine as the waste product that is eliminated from the body from the urethra. The kidney consists of various small units that function to filter the blood. This unit is called a nephron. It has two main units called renal tubules and renal corpuscle. Each part of this unit has a special function.
Bowman’s capsule is the expanded portion of the renal tubule at its beginning. It surrounds the renal corpuscle network of the glomerulus. It performs the first function in blood filtration. It is a cup-like sac structure that is composed of two layers. The inner layer functions to cover the glomerulus and the outer layer is continuous to the inner layer and with the renal tubule. It is composed of flat cells that are placed in a single layer and have irregular boundaries. These cells are called simple squamous epithelium. The simple squamous epithelium is present in various coverings including blood vessels lining and air sacs lining in the lungs. The transport happens through diffusion through them.
Thus, the right answer is option B.
Note: The main function of Bowman’s capsule in the kidney is the ultrafiltration of blood. The blood is filtered at a normal rate of $125ml/\min $. Small molecules like, amino acids, urea, water, glucose, salt, etc pass freely through Bowman’s capsule. But large molecules like proteins, cells, fats, etc are not able to pass through it. The filtrate that leaves Bowman’s capsule is similar to blood plasma.
Complete answer: The kidney is the bean-like organ present in a pair in the lower abdominal portion of the human body. It acts as a blood filter and produces urine as the waste product that is eliminated from the body from the urethra. The kidney consists of various small units that function to filter the blood. This unit is called a nephron. It has two main units called renal tubules and renal corpuscle. Each part of this unit has a special function.
Bowman’s capsule is the expanded portion of the renal tubule at its beginning. It surrounds the renal corpuscle network of the glomerulus. It performs the first function in blood filtration. It is a cup-like sac structure that is composed of two layers. The inner layer functions to cover the glomerulus and the outer layer is continuous to the inner layer and with the renal tubule. It is composed of flat cells that are placed in a single layer and have irregular boundaries. These cells are called simple squamous epithelium. The simple squamous epithelium is present in various coverings including blood vessels lining and air sacs lining in the lungs. The transport happens through diffusion through them.
Thus, the right answer is option B.
Note: The main function of Bowman’s capsule in the kidney is the ultrafiltration of blood. The blood is filtered at a normal rate of $125ml/\min $. Small molecules like, amino acids, urea, water, glucose, salt, etc pass freely through Bowman’s capsule. But large molecules like proteins, cells, fats, etc are not able to pass through it. The filtrate that leaves Bowman’s capsule is similar to blood plasma.
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