KingMars KingMars

26-03-2017
Biology

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what makes up the placenta?

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youngkeyon680 youngkeyon680

26-03-2017

The placenta is composed of both maternal tissue and tissue derived from the embryo. The chorion is the embryonic-derived portion of the placenta. It is composed of fetal blood vessels and trophoblasts which are organized into finger-like structures called chorionic villi.

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