Figure 1. Superior view of the right pelvic region. 1 = obturator artery; 2 = external iliac artery; 3 = external iliac vein; 4 = obturator nerve; 5 = obturator veins; 6 = vas deferens; 7 = urinary bladder; 8 = inferior epigastric artery and vein; 9 = psoas major muscle.