beta adrenergic receptor

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beta adrenergic receptor2016-12-30T20:41:58+00:00

beta adrenergic receptor


Any of three G protein-coupled cell membrane receptors in the sympathetic nervous system, which dampen the response to catecholamines.

Beta adrenergic receptors

Beta-1 adrenergic receptor Increases cardiac output by raising the heart rate, impulse conduction, and contraction, thereby increasing the left ventricular ejection fraction; increases juxtaglomerular renin secretion; increases gastric secretion of ghrelin (the hunger hormone, which contrasts to leptin, the satiation hormone)

Beta-2 adrenergic receptor Smooth muscle relaxation resulting in bronchodilation, reduced GI motility, relaxation of detrusor muscle‎ of the bladder, as well as lipolysis, glycogenolysis and gluconeogenesis, and increased renin secretion

Beta-3 adrenergic receptor Increases lipolysis in fat and thermogenesis in skeletal muscle


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