norepinephrine

[/ˌnɔːrˌɛpɪˈnɛfrɪn/]
nounfemininepl: norepinephrines
noradrenalina
1. A hormone and neurotransmitter produced by the adrenal glands and sympathetic nervous system that increases heart rate, blood pressure, and blood glucose levels in response to stress or danger
Norepinephrine is released during the fight-or-flight response to prepare the body for action.
A noradrenalina é liberada durante a resposta de luta ou fuga para preparar o corpo para ação.
2. A catecholamine compound used medically as a vasoconstrictor and cardiac stimulant in treatment of hypotension and shock
The patient was administered norepinephrine to maintain adequate blood pressure during surgery.
O paciente recebeu noradrenalina para manter a pressão arterial adequada durante a cirurgia.
Norepinephrine is a fundamental concept in modern medicine and neuroscience, equally important in both Brazilian and American medical education. The term is standardized across Portuguese-speaking medical communities. In Brazil, it appears frequently in psychiatric and cardiovascular medicine contexts, while in the USA it is central to emergency medicine and critical care protocols.
Synonyms / Sinônimos
noradrenalinenoradrenergic compoundcatecholamine
Antonyms / Antônimos
acetylcholineparasympathetic agent

Regional Variations

General Brazilian Portuguese
noradrenalina
Standard term used in medical and scientific contexts
Portugal
noradrenalina
Same as Brazilian Portuguese; universal medical terminology
Medical contexts
norepinefrina
Less common Latinized variant sometimes used in older Brazilian medical literature

Related Words

epinephrineadrenalinedopaminesympathetic nervous systemadrenal glandneurotransmittercatecholaminestress hormone

Related Idioms & Phrases

fight-or-flight response
stress hormone release
adrenergic stimulation
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