beta-adrenergic receptors


Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia.

β-ad·re·ner·gic re·cep·tors

adrenergic receptors in effector tissues capable of selective activation and blockade by drugs; conceptually derived from the ability of certain agents, such as propranolol, to block only some adrenergic receptors and of other agents, such as isoproterenol, to activate only the same adrenergic receptors. Such receptors are designated as β-receptors. Their activation results in physiologic responses such as increases in cardiac rate and force of contraction (β1), and relaxation of bronchial and vascular smooth muscle (β2) contained in skeletal muscle.

β-ad·re·ner·gic re·cep·tors

(adrĕ-nĕrjik rĕ-septŏrz)
Those in effector tissues capable of selective activation and blockade by drugs.
References in periodicals archive ?
Polymorphism of beta-adrenergic receptors and susceptibility to open-angle glaucoma.
5) At that time, it was shown that aerobic exercisers had greater alpha-adrenergic receptor density and significantly lower beta-adrenergic receptor density than weight trainers.
These results suggest that beta-adrenergic receptors regulate the Fas ligand-Fas signaling cascade to reduce apoptosis in human retinal endothenial cells.

Full browser ?