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Atlas of Human Embryos Chapter   Figure

T-3 Myotome, T-3 neural crest, allantois, bifurcation of common umbilical vein, common umbilical artery, common umbilical vein, dorsal aorta, dorsal mesentery, ectoderm, hindgut, lateral mesoderm, lateral mesoderm (somatic), lateral mesoderm (splanchnic), left umbilical artery, left umbilical vein, mesonephric duct, neural canal, paraxial mesoderm, right umbilical artery, right umbilical vein, tail bud, tailgut endoderm, urogenital mesentery

A section through the T-3 neural crest and the cranial part of the hindgut.

Observe:
1. The caudal edge of the neural canal.
2. The three primitive germ layers in the tail bud with their relative positions.
3. Two subdivisions of lateral mesoderm: somatic and splanchnic.
4. The bifurcation of the common umbilical vein into right and left umbilical veins.
5. The cranial part of the hindgut suspended by the dorsal mesentery.


Keywords: T-3 Myotome, T-3 neural crest, allantois, bifurcation of common umbilical vein, common umbilical artery, common umbilical vein, dorsal aorta, dorsal mesentery, ectoderm, hindgut, lateral mesoderm, lateral mesoderm (somatic), lateral mesoderm (splanchnic), left umbilical artery, left umbilical vein, mesonephric duct, neural canal, paraxial mesoderm, right umbilical artery, right umbilical vein, tail bud, tailgut endoderm, urogenital mesentery

Source: Atlas of Human Embryos.