Which of the Following Best Represents the Partial Pressures of All

question 21

Multiple Choice

Which of the following best represents the partial pressures of all gases in the normally ventilated and perfused alveolus when breathing room air at sea level?

• A) PO₂ = 40 mm Hg; PCO₂ = 100 mm Hg; PN₂ = 573 mm Hg; PH₂O = 47 mm Hg
• B) PO₂ = 100 mm Hg; PCO₂ = 40 mm Hg; PN₂ = 573 mm Hg; PH₂O = 47 mm Hg
• C) PO₂ = 100 mm Hg; PCO₂ = 40 mm Hg; PN₂ = 713 mm Hg; PH₂O = 47 mm Hg
• D) PO₂ = 149 mm Hg; PCO₂ = 40 mm Hg; PN₂ = 573 mm Hg; PH₂O = 47 mm Hg

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