Question

What will be the p0₂ and pC0₂ in the atmospheric air compared to those in the alveolar air ?
(i) p0₂ lesser, pC0₂ higher
(ii) p0₂ higher, pC0₂ lesser
(iii) p0₂ higher, pC0₂ higher
(iv) p0₂ lesser, pC0₂ lesser

Answer 1

(ii) pO2 higher p CO2 lesser....
because air flow from higher partial pressure to lower...

Answer 2

Solution:

Option 2 is the right answer.

Therefore, the partial pressure of oxygen in atmospheric air is higher than the oxygen content in alveolar air.

Consequently, partial pressure of carbon dioxide in atmospheric air is lesser than the oxygen content in alveolar air which 0.3 mm Hg and 40 mm Hg respectively.