Renal calyx

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Renal calyx
Blausen 0592 KidneyAnatomy 01.png
Kidney, with major and minor calyces labeled near bottom.
Kidney PioM.png
Latin calices renales
Gray's p.1225
Precursor Ureteric bud
MeSH Kidney+calices
Anatomical terminology

The renal calyces are chambers of the kidney through which urine passes. The minor calyces surround the apex of the renal pyramids. Urine formed in the kidney passes through a renal papilla at the apex into the minor calyx; two or three minor calyces converge to form a major calyx, through which urine passes before continuing through the renal pelvis into the ureter.

Peristalsis of the smooth muscle originating in pace-maker cells originating in the walls of the calyces propels urine through the renal pelvis and ureters to the bladder.

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