Which of the following statements is not true?

Question

Which of the following statements is not true? (A) The partial pressure of oxygen in oxygenated blood is 95 mm Hg (B) The partial pressure of oxygen in the alveolar air is 104 mm Hg (C) The partial pressure of carbon dioxide in the alveolar air is 40 mm Hg (D) The partial pressure of carbon dioxide in deoxygenated blood is 95 mm Hg

Tardigrade Admin · Accepted Answer

Each gas in the mixture exerts a part of the total pressure proportional to its concentration, ie, the partial pressure. This is denoted as p,e.g., Po₂, Pco₂.
Partial pressure (mm Hg) of respiratory gases
Expired Air

O₂	158	100	40	95	116
CO₂	0.3	40	46	40	32

Q. Which of the following statements is not true?

The partial pressure of oxygen in oxygenated blood is 95 mm Hg

The partial pressure of oxygen in the alveolar air is 104 mm Hg

The partial pressure of carbon dioxide in the alveolar air is 40 mm Hg

The partial pressure of carbon dioxide in deoxygenated blood is 95 mm Hg

Each gas in the mixture exerts a part of the total pressure proportional to its concentration, ie, the partial pressure. This is denoted as p,e.g., Po2, Pco2. Partial pressure (mm Hg) of respiratory gases Expired Air O2 158 100 40 95 116 CO2 0.3 40 46 40 32

Each gas in the mixture exerts a part of the total pressure proportional to its concentration, ie, the partial pressure. This is denoted as p,e.g., Po₂, Pco₂.
Partial pressure (mm Hg) of respiratory gases
Expired Air

O₂ 158 100 40 95 116

CO₂ 0.3 40 46 40 32