Some epiblast cells migrate and emerge between the epiblast and endoderm as a new germ layer called the ________.
A) yolk sac
B) mesoglia
C) notochord
D) mesoderm
E) primitive streak
Correct Answer:
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Q18: When the embryonic mass of cells develops
Q19: Fusion of the male and female pronuclei
A)
Q20: An embryonic cell that has the potential
Q21: The embryonic membrane that completely encloses the
Q22: Through what structure do epiblast cells migrate
Q24: Where does implantation normally occur?
A) In the
Q25: The cytotrophoblast
A) forms the chorionic villi.
B) replaces
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
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