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Get Answers to all your Questions
Q5 What will be the and
in the atmospheric air compared to those in the alveolar air?
(i) lesser,
higher
(ii) higher,
lesser
(iii) higher,
higher
(iv) lesser,
lesser
Answers (1)
PO2 higher, pCO2 lesser
As the partial pressure of oxygen in atmospheric air is higher than that of oxygen in alveolar air. So, in atmospheric air, pO2 is about 159 mm Hg and in alveolar air, it is about 104 mm Hg. The partial pressure of carbon dioxide in atmospheric air is lesser than that of carbon dioxide in alveolar air.
In atmospheric air, pCO2 is about 0.3 mmHg and in alveolar air, it is about 40 mm Hg.
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