The oxygen tension of the mixed venous blood is______________?
A. 25 mm Hg
B. 40 mm Hg
C. 55 mm Hg
D. 70 mm Hg
The oxygen tension of the mixed venous blood is______________?
A. 25 mm Hg
B. 40 mm Hg
C. 55 mm Hg
D. 70 mm Hg