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Question

What is the normal pCO2 of the capillary blood?


A

0.05 mm Hg

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B

45 mm Hg

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C

40 mm Hg

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D

104 mmHg

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Solution

The correct option is B

45 mm Hg


Partial pressure refers to the pressure exerted by a specific gas in a mixture of other gases. The partial pressure of carbon dioxide in the blood capillaries is usually around 45 mm Hg (deoxygenated blood).

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