The cytotrophoblast
A) forms the chorionic villi.
B) replaces the syncytiotrophoblast.
C) remains throughout development.
D) forms branches that protrude into the amniotic cavity.
E) is not an embryonic part of the placenta.
Correct Answer:
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Q20: An embryonic cell that has the potential
Q21: The embryonic membrane that completely encloses the
Q22: Through what structure do epiblast cells migrate
Q23: Some epiblast cells migrate and emerge between
Q24: Where does implantation normally occur?
A) In the
Q26: Gastrulation is the process of development that
Q27: Which germ layer is covering of the
Q28: Placenta previa occurs when
A) a normally placed
Q29: Which germ layer is the thymus derived
Q30: Which germ layer is the epidermis derived
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