beta receptor

beta receptor

noun Biochemistry, Physiology.
a site on a cell, as of the heart, that, upon interaction with epinephrine or norepinephrine, controls heartbeat and heart contractability, vasodilation, smooth muscle inhibition, and other physiological processes.
Also, beta-receptor.
Also called beta-adrenergic receptor.
Compare alpha receptor.


Origin:
1960–65

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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WordNet
beta receptor

noun
receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasodilation and increased heart beat) 
WordNet® 3.0, © 2006 by Princeton University.
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