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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 .
Word History and Origins
Origin of norepinephrine1
Compare Meanings
How does norepinephrine compare to similar and commonly confused words? Explore the most common comparisons:
Example Sentences
You have norepinephrine and oxytocin and vasopressin and serotonin, you have this chemical cocktail in your brain that is almost the same chemical cocktail as when you’re in love with someone.
Key communication molecules such as serotonin, norepinephrine and dopamine can get scrambled when there’s lots of inflammation.
NPY works as a natural tranquilizer that controls anxiety and buffers the effects of stress hormones like norepinephrine.
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