Heroin and morphine exert their effects by acting as agonists at receptor sites for a class of neurotransmitters called
A) endogenous opiates.
B) endogenous cannabinoids.
C) catecholamines.
D) neuromodulators.

Question

Quizplus · Accepted Answer

Heroin and morphine act as agonists at receptor sites for endogenous opiates, such as endorphins, which are involved in pain relief and mood regulation.

Heroin and Morphine Exert Their Effects by Acting as Agonists