Advertisement
Advertisement
norepinephrine
[ nawr-ep-uh-nef-rin, -reen ]
noun
- 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.
- Pharmacology. a commercial form of this substance used for emergency treatment of lowered blood pressure.
norepinephrine
/ ˌnɔːrɛpɪˈnɛfrɪn; -riːn /
norepinephrine
/ nôr′ĕp-ə-nĕf′rĭn /
- 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: C 8 H 11 NO 3 .
Discover More
Word History and Origins
Origin of norepinephrine1
First recorded in 1940–45; nor- + epinephrine
Discover More
Example Sentences
NPY works as a natural tranquilizer that controls anxiety and buffers the effects of stress hormones like norepinephrine.
From The Daily Beast
Advertisement
Advertisement
Advertisement
Advertisement
Browse