A drug that produces a depolarization block of muscle cells is
A) muscarine.
B) succinylcholine.
C) nicotine.
D) d-tubocurarine.

Question

Quizplus · Accepted Answer

Succinylcholine is a muscle relaxant drug that produces depolarization block by mimicking the action of acetylcholine and causing prolonged depolarization of the postsynaptic membrane, ultimately leading to muscle paralysis. Muscarine and nicotine activate acetylcholine receptors but do not produce depolarization block. D-tubocurarine is a competitive antagonist of acetylcholine receptors and does not cause depolarization block.

A Drug That Produces a Depolarization Block of Muscle Cells