Question : How does exchangeof gases occurs at lung surface .

1.	Question : How does exchangeof gases occurs at lung surface .
Answer» SOLUTION :At the lung surface , OXYGEN diffuses from alveolar air `(P_(o_(2)) = 104` mmHg) intoblood of pulmonaryarterial CAPILLARY`(P_(o_(2)) = 40` mm Hg), While carbon dioxidediffuse from arterial capillary blood (`P_(CO_(2))` = 46 mm Hg) to alveolarair(`P_(CO_(2))` = 40 mm Hg).

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