Which of the following statement is incorrect?

Moderate

A

Partial pressure of O₂ (pO₂) is higher in the air inside the lungs.
B

Partial pressure of CO₂ (pCO₂) is higher in the air inside he lungs.
C

Partial pressure of O₂ (pO₂) is lower inside the venous blood than in the air in the lung.
D

Partial pressure of CO₂ (pCO₂) is higher inside the venous blood than in the air.

Solution

pO₂ of alveoli is 104 mm Hg, while in atmosphere it is 159 mmHg. Hence, pO₂ is higher in the atmosphere compared to alveoli.

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