Endorphins are neurotransmitters that
A) are associated with sleep and wakefulness.
B) resemble opiates in structure and effect.
C) are associated with the movement of voluntary muscles.
D) have been related to the development of certain psychological disorders.

Question

Quizplus · Accepted Answer

Endorphins are neurotransmitters that have a similar chemical structure and effect as opiates. They are often referred to as the body's natural painkillers and are released during exercise, excitement, and other activities to produce feelings of euphoria and pleasure.

Endorphins Are Neurotransmitters That