According to the oxygen-hemoglobin dissociation curve,PO₂ in the lungs of 100 mm Hg results in Hb being 98% saturated.At high altitude,there is less O₂.At a PO₂ in the lungs of 80 mm Hg,Hb would be ________ saturated. A) 98% B) less than 50% C) 100% D) 95%

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According to the oxygen-hemoglobin dissociation curve, a PO2 of 80 mm Hg would result in Hb being approximately 95% saturated. This is because the curve shows that as the PO2 decreases, so does the percent saturation of Hb with oxygen. However, at 80 mm Hg, the curve is still in the plateau phase where a small change in PO2 results in a relatively small change in percent saturation. Therefore, Hb would still be highly saturated at 80 mm Hg but slightly less than at 100 mm Hg (98%). The other options (A, B, and C) are not accurate based on the information provided.

According to the Oxygen-Hemoglobin Dissociation Curve,PO2 in the Lungs of 100

According to the Oxygen-Hemoglobin Dissociation Curve,PO₂ in the Lungs of 100