In the embryonic stage, what is the term for the layer that forms the muscles, bones, blood, and circulatory system?

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The mesoderm is the middle layer of the three germ layers that form during embryonic development. It gives rise to the muscles, bones, blood, and circulatory system. The ectoderm forms the skin, nervous system, and sense organs, while the endoderm forms the gut and associated organs. The placenta is an organ that forms during pregnancy and facilitates the exchange of nutrients and waste between the mother and fetus.

In the Embryonic Stage, What Is the Term for the Layer