The binding of acetylcholine to its receptor at the neuromuscular junction causes the opening of a
A) Na⁺ channel.
B) channel for both Na⁺ and K⁺.
C) calcium channel.
D) ryanodine receptor.

Question

Quizplus · Accepted Answer

The binding of acetylcholine to its receptor at the neuromuscular junction causes the opening of a channel for both Na⁺ and K⁺. This allows for an influx of sodium ions and an efflux of potassium ions, resulting in depolarization of the muscle cell membrane and ultimately leading to muscle contraction.

The Binding of Acetylcholine to Its Receptor at the Neuromuscular