The embryonic membrane that forms the first blood cells is the:
A) chorion
B) amnion
C) yolk sac
D) umbilical cord
Correct Answer:
Verified
Q22: In the early embryo, the mesoderm gives
Q23: Which of these embryonic structures is NOT
Q24: In the early embryo, the endoderm gives
Q25: In the early embryo, the liver and
Q26: The portion of the blastocyst that secretes
Q28: In the gestation period, the period of
Q29: In the early embryo, the heart and
Q30: An ectopic pregnancy is one in which:
A)fertilization
Q31: In the early embryo, the ectoderm gives
Q32: In the early embryo, the nervous system
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