The ________ is the first embryonic membrane to appear,and it is the first site of ________.
A) amnion, umbilical cord formation
B) yolk sac, placenta development
C) chorion, neural system development
D) allantois, amniotic fluid formation
E) yolk sac, blood cell formation
Correct Answer:
Verified
Q18: Which of the following is involved in
Q19: When does the heart begin to develop?
A)
Q20: Which of these is associated with pre-embryonic
Q21: The white,greasy,cheeselike substance that covers the fetus's
Q22: What structure produces progesterone and estrogen during
Q24: The first system in the body to
Q25: The blood of the mother and the
Q26: The yolk sac of the chick provides
Q27: The amnion is to the amniotic fluid
Q28: Which of the following would be considered
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