The Partial Pressure of Oxygen in the

question 48

Multiple Choice

The partial pressure of oxygen in the

• A) atmospheric air averages 79 percent of total atmospheric pressure
• B) blood is the most important factor that determines the extent to which O₂ will combine with hemoglobin
• C) arterial blood is decreased when hemoglobin preferentially combines with CO rather than O₂
• D) atmospheric air averages 79 percent of total atmospheric pressure, and blood is the most important factor that determines the extent to which O₂ will combine with hemoglobin
• E) all of these

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