Which of the following structures differentiates to become the placenta, the umbilical cord, and other support structures for the developing baby?
A) blastocyst
B) chorionic villi
C) trophoblast
D) vernix caseosa
Correct Answer:
Verified
Q13: The zygote's outer layer of cells divides
Q14: In which stage of prenatal development does
Q15: The formation of the trophoblast and blastocyst
Q16: The trophoblast is the _ layer of
Q17: The blastocyst is the _ layer of
Q19: The embryonic stage of prenatal development has
Q20: The zygote embeds itself into the inner
Q21: The optimal time for implantation is _
Q22: A zygote is referred to as an
Q23: Which stage of prenatal development occurs during
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