If the neural tube does not close inferiorly,______ may result.
A) anencephaly
B) conjoined twins
C) spina bifida
D) down syndrome
Correct Answer:
Verified
Q54: A woman is clinically pregnant when fertilization
Q55: The umbilical cord contains
A)the fetal intestine.
B)two umbilical
Q56: At the placenta,
A)oxygen enters the fetal circulation.
B)nutrients
Q57: During the eighth week
A)all organ systems have
Q58: The umbilical vein carries
A)waste and carbon dioxide
Q60: During the fifth through seventh months,
A)the sex
Q61: The tissues of the gonads are indifferent
Q62: What is cryptorchidism?
A)Failure of ovary development
B)Vagina does
Q63: Placental peptide hormones cause maternal
A)increase in blood
Q64: Darkening of the areolae and other areas
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