The partial pressure of oxygen in the alveoli | vedclass

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Question

(B) The partial pressure of oxygen $(pO_2)$ in the alveoli is approximately $104 \ mm \ Hg$. In contrast,the $pO_2$ in deoxygenated blood is $40 \ mm

Vedclass · Accepted Answer

more than that in the blood

Vedclass · Answer

(B) The partial pressure of oxygen $(pO_2)$ in the alveoli is approximately $104 \ mm \ Hg$. In contrast,the $pO_2$ in deoxygenated blood is $40 \ mm \ Hg$ and in oxygenated blood is $95 \ mm \ Hg$. Since the partial pressure of oxygen in the alveoli is higher than that in the blood,oxygen diffuses from the alveoli into the blood. Therefore,the correct option is $B$.

The partial pressure of oxygen in the alveoli of the lungs is

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