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1. (n.) norepinephrine
a neurotransmitter that is similar to epinephrine, acts to constrict blood vessels and dilate bronchi, used esp. in medical emergencies to raise blood pressure.
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| Definition of 'NOREPINEPHRINE' |
Princeton's WordNet |
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1. (noun) noradrenaline, norepinephrine
a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses
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| Definition of 'NOREPINEPHRINE' |
U.S. National Library of Medicine |
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1. NOREPINEPHRINE
Precursor of epinephrine that is secreted by the adrenal medulla and is a widespread central and autonomic neurotransmitter. Norepinephrine is the principal transmitter of most postganglionic sympathetic fibers and of the diffuse projection system in the brain arising from the locus ceruleus. It is also found in plants and is used pharmacologically as a sympathomimetic.
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Definitions of NOREPINEPHRINE 
