The pleasant feeling called a "high" produced by using narcotics is due to:
A) an increase in the release of the neurotransmitter serotonin.
B) the opponent process caused by IV injection.
C) the drug attaching to sites normally receptive to endorphins.
D) the drug flooding neurotransmitter synapses with dopamine.

Question

Quizplus · Accepted Answer

The "high" produced by narcotics is due to the drug attaching to sites normally receptive to endorphins, which are natural neurotransmitters that produce feelings of pleasure and pain relief. Narcotics mimic the effects of endorphins and therefore produce a similar feeling of euphoria.

The Pleasant Feeling Called a "High" Produced by Using Narcotics