Triggering of the muscle action potential occurs after

Question

Quizplus · Accepted Answer

Acetylcholine binding to chemically-gated channels on the end plate membrane triggers the opening of sodium ion channels and the influx of sodium ions into the muscle cell, leading to depolarization and the initiation of an action potential. Acetylcholinesterase is responsible for breaking down acetylcholine, not binding to receptors on the end plate. Calcium ion binding to channels on the end plate does not directly trigger the muscle action potential. The nerve action potential does not jump across the neuromuscular junction; rather, it triggers the release of acetylcholine from the nerve terminal.

Triggering of the Muscle Action Potential Occurs After