When acetylcholine binds to its receptors at the motor end plate, the muscle fiber 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 at the motor end plate, it causes the muscle fiber membrane to become more permeable to sodium ions, leading to depolarization and muscle contraction.

When Acetylcholine Binds to Its Receptors at the Motor End