The placental barrier between fetal blood and the mother's blood prevents a number of bacteria and viruses from reaching the fetus,but ____________ is able to pass through on a regular basis.
A) oxygen
B) a cold virus
C) the mother's blood
D) breast milk
Correct Answer:
Verified
Q19: Which of the following cell layers differentiates
Q20: Sperm may arrive at the egg as
Q21: The mass of tissue that allows nutrients
Q22: During pregnancy,physical problems such as constipation,nosebleeds,and/or edema
Q23: Nägele's rule is used to
A)determine whether pregnancy
Q25: One of your close female friends tells
Q26: That membrane which is the closest to
Q27: Beta-hCG radioimmunoassay provides a _ sign of
Q28: Human chorionic gonadotropin (hCG)is secreted by the
A)amnion
B)chorion
C)placenta
D)uterus
Q29: Fetal development occurs most rapidly in the
A)first
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