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noun
1.
Also called noradrenaline. Physiology. a neurotransmitter, released by adrenergic nerve terminals in the autonomic and possibly the central nervous system, that has such effects as constricting blood vessels, raising blood pressure, and dilating bronchi.
2.
Pharmacology. a commercial form of this substance used for emergency treatment of lowered blood pressure.
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Norepinephrine
is always a great word to know.
So is menopause. Does it mean:
| a group of structurally different organs working together in the performance of a particular function; the digestive apparatus |
| the period of permanent cessation of menstruation |
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Collins English Dictionary - Complete & Unabridged 10th Edition
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary
norepinephrine nor·ep·i·neph·rine (nôr'ěp-ə-něf'rĭn)
n.
A substance, both a hormone and neurotransmitter, secreted by the adrenal medulla and the nerve endings of the sympathetic nervous system to cause vasoconstriction and increases in heart rate, blood pressure, and the sugar level of the blood. Also called levarterenol, noradrenalin.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
norepinephrine  (nôr'ěp-ə-něf'rĭn) Pronunciation Key
A substance that acts both as a neurotransmitter and hormone, secreted in the central nervous system, at the nerve endings of the sympathetic nervous system, and by the adrenal gland. Norepinephrine is similar to epinephrine in its physiological effects but acts to regulate regular physiologic activity rather than being released in response to stress. Also called noradrenaline. Chemical formula: C8H11NO3. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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