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Atlas of Human Embryos Chapter   Figure

L-3 spinal ganglion, L-4 spinal ganglion, allantois, appendix, caudal limb of midgut, centrum, cranial limb of midgut, dorsal mesentery, edge of genital tubercle, extensor muscles of thigh, femur, flexor muscles of thigh, ilium, inferior vena cava (interpostcardinal segment), internal iliac artery and vein, ischium, junction of mesonephric duct and urogenital sinus, knee joint area, marginal vein, median sacral artery, metanephric duct, tibia, transversopinal muscle group, umbilical coelom, umbilical cord

A section through the L-4 spinal ganglion and the cranial edge of the genital tubercle.

Observe:
1. The junction of the mesonephric duct and the urogenital sinus.
2. The metanephric duct coursing ventrally to join the urogenital sinus.
3. The inferior vena cava segment formed by the anastomosis of the post-cardinal veins.
4. The ilium and ischium of the developing pelvic bone.
5. The knee joint area between the femur and tibia.


Keywords: L-3 spinal ganglion, L-4 spinal ganglion, allantois, appendix, caudal limb of midgut, centrum, cranial limb of midgut, dorsal mesentery, edge of genital tubercle, extensor muscles of thigh, femur, flexor muscles of thigh, ilium, inferior vena cava (interpostcardinal segment), internal iliac artery and vein, ischium, junction of mesonephric duct and urogenital sinus, knee joint area, marginal vein, median sacral artery, metanephric duct, tibia, transversopinal muscle group, umbilical coelom, umbilical cord

Source: Atlas of Human Embryos.