February 24, 2017

Homework Help: psychology

Posted by tzeni on Wednesday, January 7, 2009 at 2:18pm.

Why is the placenta unique as to its origin?
A it's the first fetal structure to develop
B it's allows the mixing of oxygen and nutrients between mother and child
C its develops from material supplied both by the mother and the fetus
D it provides the fluid that surrounds and protects the embryo

i believe the correct answer is D

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