| 释义 |
DictionarySeejuxtaglomerular apparatusjuxtaglomerular complex
jux·ta·glo·mer·u·lar com·plexa complex consisting of (a) the juxtaglomerular cells, which are modified smooth muscle cells in the wall of the afferent glomerular arteriole and sometimes also the efferent arteriole; (b) extraglomerular mesangium (lacis cells), which are located in the angle between the afferent and efferent glomerular arterioles; (c) the macula densa of the distal tubule; and (d) granular epithelial peripolar cells located at the angle of reflection of the parietal to the visceral capsule of the renal corpuscle; provides feedback control of extracellular fluid volume and glomerular filtration rate by activating the renin-angiotensin system. Synonym(s): j-g complex, juxtaglomerular apparatus |