alpha receptor
or al·pha-re·cep·tor
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noun
a site on a cell that, upon interaction with epinephrine or norepinephrine, controls vasoconstriction, intestinal relaxation, pupil dilation, and other physiological processes.
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Also called alpha-adrenergic receptor.
Compare beta receptor.
Origin of alpha receptor
First recorded in 1960–65
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023