juxtaglomerular cells

juxtaglomerular cells
specialized smooth muscle cells found in the tunica media of the afferent glomerular arterioles, containing secretory granules. They are the major structural component responsible for the release of renin and play a major role in renal autoregulation and tubuloglomerular feedback.

Medical dictionary. 2011.

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  • Juxtaglomerular apparatus — The prefix juxta comes from the Latin preposition meaning near, nearby, close. The juxtaglomerular apparatus is a collective term referring to the cells near a structure called the glomerulus in the kidney. The juxtaglomerular cells are… …   Medical dictionary

  • Juxtaglomerular cell — In the kidney, the juxtaglomerular cells (JG cells, also known as granular cells) are cells that synthesize, store, and secrete the enzyme renin. They are specialized smooth muscle cells in the wall of the afferent arteriole that delivers blood… …   Wikipedia

  • juxtaglomerular granules — stainable osmophilic secretory granules present in the juxtaglomerular cells, closely resembling zymogen granules …   Medical dictionary

  • juxtaglomerular — ¦jəkstəˌ adjective Etymology: juxta + glomerular : situated near a kidney glomerulus juxtaglomerular cells …   Useful english dictionary

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  • myoepithelioid cells — juxtaglomerular c s; so called because they appear to be highly modified smooth muscle cells …   Medical dictionary

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