• Primary neurotransmitter of CNS output
• Moves muscles
• Autonomic nervous system
• Role in REM sleep and learning
• Acetylcholinesterase (AChE) degradation:
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AcH Receptors Khan Academy: Types of Neurotransmitter Receptors

• Cholinergic: Neurons releasing AcH
• Ionotropic (nicotinic)
  
• Moves skeletal muscles
• Mostly excitatory
• Blocked by curare
• Metabotropic (muscarinic)
• In brain M> N
• Slower, but excitatory and inhibitory
• Blocked by atropine (ex: iris dilator muscle of eye)

McGraw Hill: Animation: Function of the Neuromuscular Junction (Quiz 3)

Khan Academy: Neuronal Synapses (Chemical)