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How is a fetus able to extract O2 from its mother's blood?
A. Fetal blood has a higher concentration of hemoglobin than maternal blood.
B. Fetal hemoglobin has a lower affinity for O2 than maternal hemoglobin.
C. The maternal blood mixes with the fetal blood in the placenta to provide O2.
D. The pO2 of fetal blood is higher than the pO2 of maternal blood.
E. Fetal hemoglobin has a higher affinity for O2 than maternal hemoglobin.
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How is a fetus able to extract O2 from its mother's blood?
A. Fetal blood has a higher concen...
A. Fetal blood has a higher concen...
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