The amnion
A) is the first site of blood cell formation.
B) is the fetal half of the placenta.
C) becomes the umbilical cord vessels.
D) cushions and protects the embryo with fluid.
Correct Answer:
Verified
Q35: The pre-embryonic structure created by cleavage is
Q36: From which primary germ layer do both
Q37: Gestation
A)is the time from fertilization to embryo
Q38: The fetus is surrounded by a protective
Q39: Embryonic development
A)refers to the first week.
B)refers to
Q41: The placenta is composed of
A)chorionic villi.
B)uterine tissue.
C)fetal
Q42: During the third and fourth months,
A)lanugo covers
Q43: Maternal and fetal blood supplies mix to
Q44: The first system to be visually evident
Q45: During the fourth and fifth weeks
A)all organ
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