beta-adrenergic receptor


noun Biochemistry, Physiology.

Definition for beta-adrenergic receptor (2 of 2)

beta receptor

or be·ta-re·cep·tor


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 called beta-adrenergic receptor.
Compare alpha receptor.

Origin of beta receptor

First recorded in 1960–65

Medical definitions for beta-adrenergic receptor

beta-adrenergic receptor

n.

Any of various cell membrane receptors that can bind with epinephrine and related substances that activate or block the actions of cells containing such receptors. These cells initiate physiological responses such as increasing the rate and force of contraction of the heart as well as relaxing bronchial and vascular smooth muscle. beta-receptor