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E7: Mesentery. Midgut. Junction of vitelline duct and midgut. Vitelline vessels. Note communication of coeloms and the separate amniotic cavity:
E7: Hindgut
DEVELOPMENT OF THE NERVOUS SYSTEM
E7: Spinal cord has enlarged ventral horns (motor neurons).
DEVELOPMENT OF THE MUSCULOSKELETAL SYSTEM
E7: Hindlimb and Forelimb folds.