Definitions of epinephrin
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a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action
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synonyms:
Adrenalin, adrenaline, epinephrine
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type of:
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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
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endocrine, hormone, internal secretion
the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect
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neurotransmitter
a neurochemical that transmits nerve impulses across a synapse
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catecholamine
any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland
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