beta-receptor
noun
be·ta-re·cep·tor
| \ ˈbā-tə-ri-ˈsep-tər
\
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Definition of beta-receptor
: any of a group of receptors that are present on cell surfaces of some effector organs and tissues innervated by the sympathetic nervous system and that mediate certain physiological responses (such as vasodilation, relaxation of bronchial and uterine smooth muscle, and increased heart rate) when bound by specific adrenergic agents — compare alpha-receptor
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