The trophoblast cells of the blastocyst form the , which extends elaborate villi into the blood-filled sinusoids of the uterine wall.
A) amnion
B) yolk sac
C) chorion
D) allantois
Correct Answer:
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Q6: This cord attaches the embryo to the
Q7: The human blastocyst consists of two populations
Q8: The function of cleavage is to .
A)
Q9: Once fertilization has occurred, the activities of
Q10: What organs appear very early in development?
A)
Q12: In the human, this germ cell layer
Q13: The placenta is formed by .
A) maternal
Q14: This portion of the blastocyst forms the
Q15: The three primary germ layers develop during
Q16: All exchanges between mother and embryo occur
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