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adrenal medulla

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adrenal medulla
n.
The inner, reddish-brown portion of the adrenal glands that synthesizes, stores, and releases epinephrine and norepinephrine.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.adrenal medulla - the medulla of the adrenal glandadrenal medulla - the medulla of the adrenal gland; secretes epinephrine
ductless gland, endocrine gland, endocrine - any of the glands of the endocrine system that secrete hormones directly into the bloodstream
adrenal, adrenal gland, suprarenal gland - either of a pair of complex endocrine glands situated near the kidney
medulla - the inner part of an organ or structure in plant or animal


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Pheochromocytoma, an adrenaline-secreting tumor that arises normally noradrenaline in the adrenal medulla, produces a hypertension that initially paroxysmal.
The Sympathetic Division has a regulating effect on the Adrenal Medulla and during a "Fight or Flight" stress response it triggers hormone production releasing Norepinephrine and Epinephrine into the bloodstream.
Adrenal sympathetic efferent nerve activity is then enhanced through the excitation of the central nervous system, which causes marked catecholamine secretion from the adrenal medulla (Watanabe et al.
 
 
 
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