The Plateau Portion of the O₂ -Hb Curve

question 86

Multiple Choice

The plateau portion of the O₂ -Hb curve

• A) is in the blood-PO₂ range that exists at the pulmonary capillaries.
• B) means that hemoglobin becomes almost nearly saturated in the lungs unless the pulmonary capillary PO₂ falls below 60 mm Hg.
• C) is in the blood-PO₂ range that exists at the systemic capillaries.
• D) both (a) and (b) above.
• E) both (b) and (c) above.

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