Canadian Medical Guide > Anatomy > Urogenital System > Urinary Tract > Kidney > Nephrons > Kidney Glomerulus Terms and Definitions
Kidney Glomerulus
Medical Definition: | A cluster of convoluted capillaries beginning at each nephric tubule in the kidney and held together by connective tissue. |
Guide Notes: | "minimal change glomerular disease" = NEPHROSIS, LIPOID |
Glomerular Mesangium - The thin membrane which helps to support the capillary loops in a renal glomerulus. It is connective tissue composed of mesangial cells - myofibroblasts phenotypically related to vascular smooth muscle cells (MUSCLE, SMOOTH, VASCULAR), PHAGOCYTES and the mesangial EXTRACELLULAR MATRIX. | |
Juxtaglomerular Apparatus - A complex of cells consisting of juxtaglomerular cells, extraglomerular mesangium lacis cells, the macula densa of the distal convoluted tubule, and granular epithelial peripolar cells. Juxtaglomerular cells are modified smooth muscle cells found in the walls of afferent glomerular arterioles and sometimes the efferent arterioles. Extraglomerular mesangium lacis cells are located in the angle between the afferent and efferent glomerular arterioles. Granular epithelial peripolar cells are located at the angle of reflection of the parietal to visceral angle of the renal corpuscle. |
Kidney Glomerulus Medical Definitions and Terms
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