Gastrulation is the process of development that produces the ________.
A) placenta
B) embryonic disk
C) germ layers
D) rudimentary organs
Correct Answer:
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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
Q25: The cytotrophoblast
A) forms the chorionic villi.
B) replaces
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
Q31: The embryonic disk is initially composed of
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