KingMars
KingMars KingMars
  • 26-03-2017
  • Biology
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what makes up the placenta?

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youngkeyon680
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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