epinephrin

Definitions of epinephrin
  1. noun
    a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action
    synonyms: Adrenalin, adrenaline, epinephrine
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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
    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
    neurotransmitter
    a neurochemical that transmits nerve impulses across a synapse
    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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