renal medulla

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 [mĕ-dul´ah] (L.)
1. the inmost part of a structure or organ.
3. marrow. adj., adj med´ullary.
adrenal medulla the inner portion of the adrenal gland, where epinephrine and norepinephrine are produced.
medulla of bone 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 bone marrow.
renal medulla the inner part of the substance of the kidney, composed chiefly of collecting tubules, and organized into a group of structures called the 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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

re·nal me·dul·la

the inner, darker portion of the kidney parenchyma consisting of the renal pyramids.
Farlex Partner Medical Dictionary © Farlex 2012

re·nal me·dul·la

(rē'năl mĕ-dŭl'ă) [TA]
The inner, darker portion of the kidney parenchyma consisting of the renal pyramids.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
In medulla of kidney, immunolight microscopy confirmed weak labelling of AQP1 in the thick descending limb and descending thin limb of Henle's loop of HND compared with ND rats.
The affected kidney is enlarged with numerous simple cysts affecting the cortex and medulla of kidney. No extra renal cysts identified (except possibly few age related hepatic and contralateral renal cyst in some occasions).
Apatite plaque particles in inner medulla of kidneys of calcium oxalate stone thrmers: osteopontin localization.