This document discusses the embryology of the urinary tract. It covers the development of the kidneys, ureters and bladder. It also describes several anomalies that can occur in the development of the upper urinary tract, including anomalies in kidney number, shape and position as well as vascular and collecting system anomalies. Anomalies of the ureters are also discussed. The document primarily references Campbell's Urology and Langman's Medical Embryology textbooks.