Figure 1: Peritoneal zones of human parietal peritoneum. RD: right diaphragm, LD: left diaphragm, Ren: kidney, BV: urinary bladder, Ce: caecum, Rec: rectum, U: uterus, Umbo: umbilicus Region 0: central, 1: right upper, 2:epigastrium, 3: left upper, 4: left flank, 5: left lower, 6: pelvic. 7: right lower, 8: right flank.