Also found in: Thesaurus, Medical, Acronyms, Encyclopedia, Wikipedia.
noradrenaline(ˌnɔːrəˈdrɛnəlɪn; -ˌliːn) or
(Biochemistry) a hormone secreted by the adrenal medulla, increasing blood pressure and heart rate, and by the endings of sympathetic nerves, when it acts as a neurotransmitter both centrally and peripherally. Formula: C8H11NO3. US name: norepinephrine
nor•ep•i•neph•rine(ˌnɔr ɛp əˈnɛf rɪn, -rin)
a neurotransmitter that is similar to epinephrine, acts to constrict blood vessels and dilate bronchi, used esp. in medical emergencies to raise blood pressure.
Switch to new thesaurus
|Noun||1.||noradrenaline - a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses|
pressor, vasoconstrictive, vasoconstrictor - any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure
monoamine neurotransmitter - a monoamine that is functionally important in neural transmission
catecholamine - any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland