Medical Dictionary

adrenoceptor

noun ad·re·no·cep·tor \ ə-ˈdrē-nə-ˌsep-tər \
variants: or adrenoreceptor play \ə-ˌdrē-nō-ri-ˈsep-tər, -ˌdren-ō-\

medical Definition of adrenoceptor

: any of a group of receptors on cell surfaces that are activated by epinephrine or norepinephrine : an adrenergic receptor
Note: Adrenoceptors mediate certain physiological responses (such as vasodilation or vasoconstriction and smooth muscle relaxation or contraction) when bound by epinephrine or norepinephrine as part of the sympathetic nervous system.
  • They studied how norepinephrine stimulates beta-receptors, a class of adrenoceptors that mediates the release of cyclic adenosine monophosphate inside the nerve cell.
  • —Elliot S. Gershon and Ronald O. RiederScientific AmericanSeptember 1992
  • Thus, in theory, adrenoreceptor agonists which are widely used in the management of obstructive airway diseases such as asthma may lead to mucus plugging of the airways.
  • —Richard W. Costello, in Respiratory Infections in Allergy and Asthma2003

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