What is the partial pressure of oxygen (pO_2) | vedclass

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(D) The partial pressure of oxygen $(pO_2)$ in the alveoli is approximately $104 \ mmHg$. In the deoxygenated blood arriving at the lungs via the pulm

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Higher than in the blood

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(D) The partial pressure of oxygen $(pO_2)$ in the alveoli is approximately $104 \ mmHg$. In the deoxygenated blood arriving at the lungs via the pulmonary arteries,the $pO_2$ is approximately $40 \ mmHg$. Since the partial pressure of oxygen in the alveoli $(104 \ mmHg)$ is significantly higher than the partial pressure of oxygen in the blood $(40 \ mmHg)$,oxygen diffuses from the alveoli into the blood. Therefore,the partial pressure of oxygen in the alveoli is higher than in the blood.

What is the partial pressure of oxygen $(pO_2)$ in the alveoli of the lungs compared to the blood?

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