Related to the urinary bladder, anteriorly there are the following folds: one median umbilical fold on the median umbilical ligament (which in turn, contains the urachus) two medial umbilical folds on the occluded umbilical artery two lateral umbilical folds on the inferior epigastric vessels
References
External links - "Inguinal Region, Scrotum and Testes: Umbilical Folds and Peritoneal Fossae" () http://www.portfolio.mvm.ed.ac.uk/studentwebs/session5/37/ALBL_Anterolateralwall.htm