Any drug molecule that blocks the reuptake of a neurotransmitter is a(n)
A) steroid.
B) agonist.
C) endorphin.
D) antagonist.

Question

Quizplus · Accepted Answer

Agonists are substances that enhance the action of a neurotransmitter. By blocking the reuptake of a neurotransmitter, more of that neurotransmitter remains available in the synaptic cleft to bind to its receptors, thereby enhancing its action. This is why drugs that block reuptake are considered agonists, not antagonists (which would block the action of neurotransmitters).

Any Drug Molecule That Blocks the Reuptake of a Neurotransmitter