The calculated oxygen concentration in the blood is 0.0025 ml/ml of blood. Considering an atmospheric pressure as 760mmHg, how much would be the approximate oxygen tension in the blood?: (A) 40mmHg, (B) 60mmHg, (C) 80mmHg, (D) 100mmHg
Answer is C. Oxygen tension in the blood (PO2) can be detected using Henry's law. According to Henry's law oxygen dissolved in the blood is propoional to PaO2. Ref: Quantitative Human Physiology: An Introduction, By Joseph Feher, Page 582 ; Review of Medical Physiology, Ganong 21st Edition, Page 670.