Which part of an embryo differentiates into the digestive system and the respiratory system?
A) Mesoderm
B) Ectoderm
C) Endoderm
D) Periderm
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Q14: Amenorrhea is a _ sign of pregnancy.
A)presumptive
B)probable
C)positive
D)negative
Q34: The umbilical cord does which of the
Q35: Which part of an embryo differentiates into
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Q37: Which of the following is true of
Q38: Which statement describes the placenta's functions?
A)It produces
Q41: The stage of labour where the baby's
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Q44: Which of the following describes the couvade
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