Author Question: At body temperature, how much O2 will physically dissolve in plasma at a PO2 of 40 mm Hg? a. 0.12 ... (Read 76 times)

@Brianna17 · **on:** Jul 16, 2018

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

Question 2

Under normal physiologic circumstances, how many milliliters of O2 are capable of combining with 1 g of Hb?

a. 0.003 ml
b. 0.450 ml
c. 0.820 ml
d. 1.340 ml

frogdreck123456 · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

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

Answer to Question 2

ANS: D
In whole blood, each gram of hemoglobin can carry approximately 1.34 ml of O2.