This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
The Normal value of P02 in healthy man is : 
Select and explain. 
A. 45 mm Hg, B. 110 mm Hg, C. 80 mm Hg, D. 60 mm Hg
C: 80 mm Hg
Answer: C: 80 mm Hg 
Explanation: C i.e. 80 mm HgFeatureAerial blood--Mixed Venous blood (at rest)FeatureAerial blood--Mixed Venous blood (at rest) 02 tension/P0295 +- 5 mmHg40 +- 2 mm Hg02 tension/P0295 +- 5 mmHg40 +- 2 mm Hg 02 Content19 m1/100 ml14 ml /100 ml02 Content19 m1/100 ml14 ml /100 ml % Saturation of Hb95% +- 2%75%% Saturation of Hb95% +- 2%75% 02Content = dissolved 02 in the plasma + 02 Contained in the Hb * Aerial blood pH --> 7.4 +- 0.02* Dead space Volume --> 2 ml/kg body wt