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L-5 somite, T-7 myotome, T-7 neural crest, coelom, hindgut, left common iliac artery, lower limb bud, mesonephric duct, mesonephric vesicle, notochord, rectal portion of cloaca, right common iliac artery, right umbilical plexus

A section through the T-7 neural crest, L-5 somite and junction of the hindgut with the rectal portion of the cloaca.

Observe:
1. The common iliac arteries lateral to the hindgut and cloaca junction.
2. The proximal part of the lower limb bud.
3. The caudal extent of the right umbilical plexus in the lateral body wall.
4. The two segments of the mesonephric duct approaching each other.


Keywords: L-5 somite, T-7 myotome, T-7 neural crest, coelom, hindgut, left common iliac artery, lower limb bud, mesonephric duct, mesonephric vesicle, notochord, rectal portion of cloaca, right common iliac artery, right umbilical plexus

Source: Atlas of Human Embryos.