Development of kidney and ureter

This document discusses the embryology of the excretory system, specifically summarizing the development of the kidneys and ureters from the pronephros and mesonephros stages in the 5th week through maturation of the metanephros in the 8th week. It also covers abnormalities that can occur such as cystic kidney disease, renal agenesis, ectopic or horseshoe kidneys, bifid ureters, and more. The development is described through diagrams and images at each stage of gestation.