| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
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| alpha-receptor |
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| SYLLABICATION: | al·pha-re·cep·tor |
| PRONUNCIATION: | l f -r -s p t r |
| NOUN: | A site in the autonomic nervous system in which excitatory responses occur when adrenergic agents, such as norepinephrine and epinephrine, are released. Activation of alpha-receptors causes various physiological reactions, including the stimulation of associated muscles and the constriction of blood vessels. Also called alpha-adrenergic receptor.
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| The American Heritage® Dictionary of the English Language, Fourth Edition. Copyright © 2000 by Houghton Mifflin Company. Published by the Houghton Mifflin Company. All rights reserved. |
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