adrenal medulla


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Related to adrenal medulla: adrenal cortex

adrenal medulla

n.
The inner, reddish-brown portion of the adrenal glands that synthesizes, stores, and releases epinephrine and norepinephrine.
ThesaurusAntonymsRelated WordsSynonymsLegend:
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
References in periodicals archive ?
It originates from the sympathetic nervous system, most frequently from the adrenal medulla. The heterogeneous clinical behavior of neuroblastoma is dependent on numerous clinical as well as biological features (1).
The parenchyma of the adrenal medulla is specialised for neurohormonal release, itself being a modified sympathetic ganglion.
Adrenal medulla tumorlerine ait serilerin incelenmesinde bildirilen degisik oranda kompozit doku varligi bilgisi ile birlikte sayica az rastlanan KAMT'lerin daha sistemik degerlendirilmesi, feokromositoma olarak rapor edilen adrenal tumorlerin daha ayrintili histopatolojik incelenmesi gerekliligini ortaya koymaktadir.
PCCs are uncommon neuroendocrine tumors that arise from chromaffin cells of the adrenal medulla and produce excessive amounts of catecholamines, which are responsible for hypertensive surges, palpitations, headache, and diaphoresis (5).
Pheochromocytoma is a rare neoplasm arising from chromaffin cells in the adrenal medulla and is characterized by increased catecholamine synthesis and release.
Normally, norepinephrine is mainly secreted by sympathetic nerve terminals and the brain, and epinephrine is mainly secreted by the adrenal medulla. When healthy volunteers were upright, normal blood pressure was maintained by norepinephrine.
Pheochromocytoma and paraganglioma (P-PGL) are catecholamine-secreting tumors, which respectively arise from chromaffin cells of the adrenal medulla and the sympathetic ganglia.
The cellular compartment of the adrenal medulla is necrotic with intermingled fibrin exudation (star) (haematoxylin and eosin, original magnification 4x insert, original magnification 20x).
Signs and symptoms such as headache, palpitations, and hypertension resembling a pheochromocytoma may also be seen as a result of compression of adrenal medulla by cysts that grow into the adrenal gland [9].
Vitamin C is an important cofactor for both adrenal cortex and adrenal medulla. Endocr Res.
The clinical picture of abnormal electrolytes results and hyperpigmentation of the skin and mucosa elicited investigation into Addison's disease due to bilateral adrenal hemorrhage, which was then confirmed by the detection of low plasma cortisol levels (3.8-11.0 [micro]g/L) and high adrenocorticotropin levels (524-888 pg/ml), leaving the function of adrenal reticular zone and adrenal medulla normal.{Figure 1}

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