A section through the cranial edge of the umbilical arteries and allantois.
Observe:
1. The herniated portion of the cranial and caudal limbs of the midgut separated by the superior mesenteric vessels.
2. The junction of the duodenum and the cranial limb of the midgut, caudal to the liver.
3. The renal capsule and collecting tubules of the metanephros, lateral to the metanephric duct.
4. The supracardinal segment of the inferior vena cava.
5. The external iliac artery entering the thigh as the femoral artery.
Keywords: L-2 spinal ganglion, allantois, caudal limb of midgut, collecting tubule, cranial limb of midgut, dorsal mesentery, edge of liver, external iliac artery, femoral artery, hindgut, iliopsoas muscle, inferior mesenteric artery, inferior vena cava (supracardinal segment), junction of duodenum and cranial limb of midgut, lumbar artery, mesenteric lymph sac, metanephric duct (ureter), metanephros, renal capsule, superior mesenteric artery, superior mesenteric vein, sympathetic trunk, thigh, umbilical arteries, umbilical cord, umbilical vein, vitelline (omphalomesenteric) vein
Source: Atlas of Human Embryos.