The ureteric bud, also known as the metanephrogenic diverticulum, is a protrusion from the mesonephric duct during the development of the urinary and reproductive organs. It later develops into a conduit for urine drainage from the kidneys, which, in contrast, originate from the metanephric blastema.

Ureteric bud
Carnegie stage13
PrecursorWolffian duct
Gives rise topart of kidney (calyx, collecting duct, renal pelvis, ureter)
Latingemma ureterica; diverticulum metanephricum
Anatomical terminology

It is also sometimes called the "mesonephric diverticulum".

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