Question
Use the Oxygen-Hb Dissociation Curve (aka O_2-Hb Binding Curve) to answer the following questions If the blood pH is stable at 7.4, then: a. What is the percent saturation of Hb (hemoglobin) in the blood as it leaves the lungs? b. What is the percent saturation of Hb in the blood as it leaves the tissues? If the blood pH is stable but slightly alkaline at 7.6, then: a. What is the percent saturation of Hb (hemoglobin) in the blood as it leaves the lungs? b. What is the percent saturation of Hb in the blood as it leaves the tissues? What percentage of hemoglobin unloaded oxygen as it passed through the tissues? In other words, what is the difference in Hb-saturation before vs. after the blood passed through the tissues? a. At pH 7.4? b. At pH 7.6?
Explanation / Answer
1. If blood pH is stable at pH 7.4 then,
2. If blood pH is stable at pH 7.6 then,
3.
a. at pH7.4 nearly 50% of oxygen released from the Hb .
b. at pH7.6 nearly 30% of oxygen released from the Hb .
