Nicotinic receptors can become silenced by depolarization block with repeated stimulation at high doses. The other choices are incorrect. Nicotinic receptors are ionotropic receptors, not metabotropic receptors (A). They consist of α and β subunits, not γ (B). Nicotinic receptors form a sodium channel, not a potassium channel (C).

Solved

Nicotinic Receptors

Question 8

Multiple Choice

Nicotinic receptors

A) are metabotropic receptors that bind acetylcholine.
B) consist of three subunits: α, β, and γ.
C) are constructed of subunits that form a potassium channel in the cell membrane.
D) can become silenced by depolarization block with repeated stimulation at high doses.

Correct Answer: