Question

What is the relationship between surface area, ventilation, pressure (& volume) in the alveoli?

Answer 1

Explanation:

all are equal

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Answer 2

Explanation:

The partial pressure of CO2 (PCO2) is greater in mixed venous blood (Pv¯CO2) than in the alveolar gas (PACO2) and diffusion over the alveolar–capillary membrane, therefore, results in a net flow in a direction opposite to that of O2, from blood to alveolar gas