The ________,the outer layer of embryonic cells,will form skin,hair,and nails,but its earliest derivatives will be the central nervous system.

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The ectoderm is the outermost layer of embryonic cells and will eventually differentiate into the skin, hair, and nails. However, it also gives rise to the neural tube, from which the central nervous system develops. The endoderm forms the lining of internal organs, while the mesoderm gives rise to muscles, bones, and the circulatory system. There is no such thing as hyperderm.

The ________,The Outer Layer of Embryonic Cells,will Form Skin,hair,and Nails,but