Fig. 2

Cross-section of the UGF. 1, transversalis fascia; 2, parietal peritoneum; 3, visceral peritoneum; 4, ascending colon; 5, superficial layer of the UGF; 6, right kidney; 7, inferior vena cava; 8, small intestine; 9, descending colon; 10, the lateral boundary of the UGF; 11, abdominal aorta; 12, left kidney; 13, deep layer of the UGF