In the Placenta

In the placenta:

A) chorionic villi are bathed in pools of maternal blood.
B) fetal blood and maternal blood mix.
C) all substances in maternal blood that may be harmful to the fetus are prevented from going through.
D) the amnion and the chorion grow into the uterus wall.
E) hormones are absorbed to prevent them from influencing the developing fetus.

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