Why is CO the ideal gas for measuring the extent to which the alveolar capillary membrane itself impedes the diffusion rate?
A) Blood can absorb CO at a greater rate than CO can diffuse across the alveolar capillary membrane.
B) CO is lighter than O2.
C) CO can diffuse across the alveolar capillary membrane faster than blood can absorb it.
D) CO is heavier than O2.
Correct Answer:
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