A(n)_____________ refers to a drug that fails to activate a neurotransmitter receptor.
A) partial agonist
B) negative modulator
C) agonist
D) antagonist

Question

Quizplus · Accepted Answer

An antagonist refers to a drug that binds to a receptor but fails to activate it, therefore blocking the activity of a neurotransmitter. This is different from a partial agonist, which activates the receptor, but not to the same extent as a full agonist. A negative modulator also inhibits neurotransmitter activity, but it does so by binding to a different site on the receptor and changing its shape. An agonist activates the receptor and produces a response.

A(n)_____________ Refers to a Drug That Fails to Activate a Neurotransmitter