Partial pressure of oxygen in alveolar air is ________
A. 159 mm Hg
B. 90 mm Hg
C. 104 mm Hg
D. 45 mm Hg
Answer:C
Partial pressure of oxygen in alveolar air is ________
A. 159 mm Hg B. 90 mm Hg C. 104 mm Hg D. 45 mm Hg