The acetylcholine (ach) gets broken down and the choline is reabsorbed.
The presynaptic membrane formed by the terminal button of an axon which faces the cell membrane of neuron or muscle fiber. Axon may have infrequent branches which are called axon collaterals. Thus, axons and axon collaterals terminate in many short branches or telodendria.
The release of ACh transpire through Ca2+ stimulated docking, fusion, and fission of the vesicle with the nerve terminal membrane. However, the ACh, is an enzyme in the synaptic cleft as well as, ACh diffuses across the synaptic cleft.
When acetylcholine (ACh) is released from the nerve endings upon action potential-driven depolarization, triggers postsynaptic response.
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