Acetylcholine released into the junction between a motor neuron and a skeletal muscle binds to a sodium/potassium channel and opens it. This is an example of ________.
A) a voltage-gated channel
B) a ligand-gated channel
C) a second-messenger-gated channel
D) a chemical that inhibits action potentials

Question

Quizplus · Accepted Answer

Acetylcholine binding to a channel and causing it to open is an example of a ligand-gated channel. Ligand-gated channels open in response to the binding of a chemical messenger (ligand), such as a neurotransmitter, in this case, acetylcholine.

Acetylcholine Released into the Junction Between a Motor Neuron and a Skeletal