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alpha receptor

   Also found in: Medical, Wikipedia 0.03 sec.
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Noun1.alpha receptor - receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasoconstriction and relaxation of intestinal muscles and contraction of smooth muscles)
alpha-adrenergic receptor, alpha-adrenoceptor
sympathetic nervous system - originates in the thoracic regions of the spinal cord; opposes physiological effects of the parasympathetic: reduces digestive secretions; speeds the heart; contracts blood vessels
receptor - a cellular structure that is postulated to exist in order to mediate between a chemical agent that acts on nervous tissue and the physiological response


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Transcription activation by the human estrogen receptor subtype beta (ER beta) studied with ER beta and ER alpha receptor chimeras.
DDT and its metabolites alter gene expression in human uterine cell ... by McLachlan, John A. / Environmental Health Perspectives
Alpha receptors trigger the cells to constrict coronary arteries, and the beta receptors have an opposing effect.
Type A and coronary artery disease by Eisenberg, Steve / Science News
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