Question

which alternative correctly pairs a class of psychoactive drugs with its mechanism of action?
o dissociatives—mimic endorphins
o opioids—increase production of gaba; decrease production of acetylcholine
o stimulants—block reuptake of serotonin, norepinephrine, and dopamine
o depressants—mimic endorphins

Explanation:

1. Dissociatives act on NMDA - receptors, not mimic endorphins.
2. Opioids bind to opioid receptors, not affect GABA and acetylcholine production as described.
3. Stimulants work by blocking reuptake of serotonin, norepinephrine, and dopamine, which increases their availability in the synaptic cleft.
4. Depressants enhance GABA activity, not mimic endorphins.

Answer:

C. stimulants—block reuptake of serotonin, norepinephrine, and dopamine