The urachus is an embryologic remnant of the cloaca that usually degenerates after birth. resulting from the obliteration of the allantois. whose role is to connect the bladder to the umbilicus. Incomplete removal of the lumen may give rise to different malformations of the median umbilical ligament after birth. https://www.markbroyard.com/best-offer-dogijiwana-tuffer-chewer-pretzel-online-flash-choice/