When acetylcholine binds to its receptors in the muscle fiber membrane,the membrane becomes more permeable to
A) potassium.
B) sodium.
C) calcium.
D) acetylcholine.
E) acetylcholinesterase.

Question

Quizplus · Accepted Answer

When acetylcholine binds to its receptors in the muscle fiber membrane, it causes an influx of sodium ions, making the membrane more permeable to sodium. This leads to depolarization of the membrane and ultimately muscle contraction.

When Acetylcholine Binds to Its Receptors in the Muscle Fiber