part of part of connects connects develops from develops from immediate transformation of Eumetazoa abdomen renal system urinary bladder lower urinary tract urachus trunk mesoderm-derived structure remnant of embryonic structure remnant of urachus http://upload.wikimedia.org/wikipedia/commons/e/ef/Gray1036.png middle umbilical ligament FMA:16568 median umbilical ligament SCTID:89583000 median umbilical fold ligamentum umbilicale medianum EMAPA:29637 The median umbilical ligament is a structure in human anatomy. It is a shrivelled piece of tissue that represents the remnant of the embryonic urachus. It extends from the apex of the bladder to the umbilicus, on the deep surface of the anterior abdominal wall. It is unpaired. It is covered by the median umbilical fold Lateral to this structure are the medial umbilical ligament (which is a different structure, not to be confused) and the lateral umbilical ligament. Wikipedia:Median_umbilical_ligament UBERON:0006638 main body axis body proper apex of urinary bladder