Skip to Content
Medical Term:


Pronunciation: en-dor'finz, en'dor-finz


Opioid peptides originally isolated from the brain but now found in many parts of the body; in the nervous system, endorphins bind to the same receptors that bind exogenous opiates. A variety of endorphins (a, ß, and ?) that vary not only in their physical and chemical properties but also in physiologic action have been isolated.

[fr. endogenous morphine]

See Also: enkephalins

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.