At body temperature, how much O2 will physically dissolve in plasma at a PO2 of 40 mm Hg?

a. 0.12 ml/dl
b. 0.20 ml/dl
c. 0.30 ml/dl
d. 1.34 g/dl


ANS: A
By applying Henry's law, the amount of dissolved O2 in the blood (at 37° C) can be computed with the following simple formula:
Dissolved oxygen (ml/dl) = PO2 ? 0.003

Health Professions

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