The portion of the embryonic disk that eventually becomes the digestive system and the respiratory system is the

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The endoderm is the layer of the embryonic disk that gives rise to the digestive system and respiratory system. The ectoderm forms the nervous system, skin, and hair, while the mesoderm forms the musculoskeletal system and circulatory system. The trophoblast forms the outer layer of the blastocyst and contributes to the formation of the placenta.

The Portion of the Embryonic Disk That Eventually Becomes the Digestive