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