AP BIOLOGY

Detailed explanation-1: -The release of acetylcholine occurs when an action potential is relayed and reaches the axon terminus in which depolarization causes voltage-gated calcium channels to open and conduct an influx of calcium, which will allow the vesicles containing acetylcholine for release into the synaptic cleft.

Detailed explanation-2: -Acetylcholine is a small molecule that acts as a chemical messenger to propagate nerve impulses across the neuromuscular junction between a nerve and a muscle. When the nerve impulse from a motor neuron arrives at the tip of its axon, acetylcholine molecules stored there in vesicles are released into the synaptic gap.

Detailed explanation-3: -What is the fate of acetylcholine (Ach) after it binds to Ach receptors? Ach is broken down by acetylcholinesterase. The effects of acetylcholine must be terminated to prevent sustained muscle cell contraction.

Detailed explanation-4: -As a result of the action potential, the chemical transmitter acetylcholine (ACh) is released into the synaptic cleft.