| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
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| beta-receptor |
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| SYLLABICATION: | be·ta-re·cep·tor |
| PRONUNCIATION: |  b  t -r -s p tr, b - |
| NOUN: | A site in the autonomic nervous system in which inhibitory responses occur when adrenergic agents, such as norepinephrine and epinephrine, are released. Activation of beta-receptors causes various physiological reactions, such as relaxation of the bronchial muscles and an increase in the rate and force of cardiac contraction. Also called beta-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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