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Exchange of Gases

What is the n...

Question

What is the normal ${p C O}_{2}$ 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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