What is the partial pressure of CO_2 in the a | vedclass

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(A) The partial pressure of gases in the respiratory system is crucial for gas exchange.In the alveoli,the partial pressure of oxygen $(pO_2)$ is appr

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$40\; mm\; Hg$

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(A) The partial pressure of gases in the respiratory system is crucial for gas exchange.In the alveoli,the partial pressure of oxygen $(pO_2)$ is approximately $104\; mm\; Hg$.The partial pressure of carbon dioxide $(pCO_2)$ in the alveolar air is approximately $40\; mm\; Hg$.This gradient allows $CO_2$ to diffuse from the blood (where $pCO_2$ is $45\; mm\; Hg$) into the alveoli for exhalation.

What is the partial pressure of $CO_2$ in the alveolar air?

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