How can enkephalins, endorphins, and dynorphins be described?
A) Three types of opioid receptor found in the brain
B) Three classes of natural brain chemicals that have effects similar to morphine
C) Enzymes in the brain that convert morphine into its active form
D) Three chemical classes of synthetic prescription opioids

Question

Quizplus · Accepted Answer

Enkephalins, endorphins, and dynorphins are three classes of natural brain chemicals (neuropeptides) that bind to opioid receptors in the brain and have pain-relieving effects similar to those of morphine, which is an opioid drug. These substances are part of the body's natural pain control system.

How Can Enkephalins, Endorphins, and Dynorphins Be Described