After acetylcholine is released from the axon terminal,it
A)binds to its receptors in the sarcolemma.
B)binds to troponin to expose active sites on actin.
C)diffuses out of the sarcoplasmic reticulum.
D)binds to active sites on actin.

Question

Quizplus · Accepted Answer

After acetylcholine is released from the axon terminal, it binds to its receptors in the sarcolemma, specifically the nicotinic acetylcholine receptors. This binding leads to depolarization of the sarcolemma and the subsequent generation of an action potential that spreads throughout the muscle fiber, ultimately leading to the contraction of the muscle. Choices B, C, and D are not correct as they do not accurately describe the specific action of acetylcholine in muscle contraction.

After Acetylcholine Is Released from the Axon Terminal,it