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Atlas of Human Embryos Chapter   Figure

allantois, caudal neuropore, common umbilical artery in connecting stalk, cut edge of amnion, hindgut, junction of left dorsal aorta and vitelline plexus, junction of right dorsal aorta and vitelline plexus, junction of vitelline plexus and common umbilical artery, left umbilical vein in connecting stalk, notochord, right coelomic cavity, right umbilical vein

A section through the connecting stalk and the junction of the allantois with the floor of the hindgut.

Observe:
1. The junction of the dorsal aortas with the vitelline plexus and the junction of the plexus with the common umbilical artery.
2. The common umbilical artery in the connecting stalk and the left and right umbilical veins leaving the stalk.
3. The attachment of the amnion to the stalk.
4. The caudal extent of the coelomic cavity.
5. The caudal neuropore where the neural plate has not yet closed.


Keywords: allantois, caudal neuropore, common umbilical artery in connecting stalk, cut edge of amnion, hindgut, junction of left dorsal aorta and vitelline plexus, junction of right dorsal aorta and vitelline plexus, junction of vitelline plexus and common umbilical artery, left umbilical vein in connecting stalk, notochord, right coelomic cavity, right umbilical vein

Source: Atlas of Human Embryos.