Which of the following is TRUE of fetal circulation?
a. The allantois carries fetal blood to the placenta.
b. Fetal hemoglobin binds oxygen more easily than the adult form.
c. Fetal blood mixes with maternal blood to ensure proper gas exchange.
d. Blood flow into the lungs is 50% of adult flow.
e. The liver, heart and lungs receive the majority of blood flow.
ANSWER: b
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