| 释义 |
adrenal medulla
adrenal medullan. The inner, reddish-brown portion of the adrenal glands that synthesizes, stores, and releases epinephrine and norepinephrine.Thesaurus| Noun | 1. |  adrenal medulla - the medulla of the adrenal gland; secretes epinephrineductless gland, endocrine gland, endocrine - any of the glands of the endocrine system that secrete hormones directly into the bloodstreamadrenal, adrenal gland, suprarenal gland - either of a pair of complex endocrine glands situated near the kidneymedulla - the inner part of an organ or structure in plant or animal |
adrenal medulla
adrenal medulla[ə′drēn·əl mə′dəl·ə] (anatomy) The hormone-secreting chromaffin cells of the adrenal gland that produce epinephrine and norepinephrine. adrenal medulla
medulla [mĕ-dul´ah] (L.) 1. the inmost part of a structure or organ.2. medulla oblongata.3. marrow. adj., adj med´ullary.adrenal medulla the inner portion of the adrenal gland, where epinephrine and norepinephrine are produced.medulla of bone marrow" >bone marrow.medulla oblonga´ta that part of the hindbrain continuous with the pons above and the spinal cord below; it houses nerve centers for both motor and sensory nerves, where such functions as breathing and the beating of the heart are controlled. See also brain.medulla os´sium marrow" >bone marrow.renal medulla the inner part of the substance of the kidney, composed chiefly of tubules" >collecting tubules, and organized into a group of structures called the pyramids" >renal pyramids.medulla spina´lis (medulla spina´lis) spinal cord.medulla of thymus the central portion of each lobule of the thymus; it contains many more reticular cells and far fewer lymphocytes than does the surrounding cortex.adrenal medullan. The inner, reddish-brown portion of the adrenal glands that synthesizes, stores, and releases epinephrine and norepinephrine.Adrenal Medulla The centre of the adrenal gland, which is a neuroendocrine “organ” which produces catecholamines (epinephrine/adrenaline & norepinephrine/ noradrenaline) in response to stress signals from the peripheral nervous system. ADRENAL MEDULLAadrenal medullaThe central tissue of the adrenal gland. It is filled with pheochromocytes, which are derived from the neural crest and resemble postsynaptic sympathetic ganglion cells. In response to stimulation by presynaptic sympathetic axons, the pheochromocytes secrete epinephrine and norepinephrine into the bloodstream. See: illustration See: adrenal glandSee also: medullaadrenal medulla The inner part of the ADRENAL GLAND that secretes the hormones ADRENALINE and noradrenaline. The secreting cells are called chromaffin cells. See also ADRENAL CORTEX.Adrenal medullaThe inner part of the adrenal gland. The adrenal medulla produces the hormones epinephrine (adrenaline), which stimulates the heart, tightens blood vessels, and relaxes some smooth muscles; and norepinephrine, which has similar effects.Mentioned in: Adrenal Gland Scan, Pheochromocytoma, Vasodilatorsadrenal medulla
Related to adrenal medulla: adrenal cortexWords related to adrenal medullanoun the medulla of the adrenal glandRelated Words- ductless gland
- endocrine gland
- endocrine
- adrenal
- adrenal gland
- suprarenal gland
- medulla
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