Urachus fistula is a remanant of ?
Urachus fistula is a remnant of allantoic diveiculum If patent urachus in adults, urine dribbles from umbilicus known as wheeping umbilicus Inderbir Singh's Human embryology Pg 97
General anatomy
Yolk sac
Allantois
Chorion
Amnion
Allantois