The ________ is the inner membranous sac surrounding the fetus.
A) amnion
B) placenta
C) endometrium
D) chorion
A) amnion
The amnion is the inner membranous sac surrounding the fetus. The placenta is the
organ that forms next to the fetus and provides nourishment to it. The chorion is the outer
membranous sac surrounding the fetus and is on the placenta side. The endometrium is the inner
lining of the uterus.
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