Based on the Accompanying Figure, Showing Fetal (A) and Adult

question 51

Multiple Choice

Based on the accompanying figure, showing fetal (A) and adult (B) oxygen-hemoglobin saturation curves, which of the following conclusions is TRUE?

• A) The mother binds oxygen with greater affinity than the fetus.
• B) Adult saturation occurs at lower partial pressures of oxygen than fetal saturation does.
• C) At 50 percent saturation, fetal blood will have a higher affinity for oxygen than adult blood will.
• D) As the partial pressure of oxygen increases, adult hemoglobin approaches saturation faster than fetal hemoglobin does.

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