Chronic obstructive pulmonary disease (COPD) includes emphysema.
Which effects does emphysema have on gaseous exchange?
1 surface area to volume ratio of lungs decreases
2 distance of the diffusion pathway decreases
3 volume of oxygen diffused per unit time decreases
1 )
1, 2 and 3
2 )
1 and 2 only
1 and 3 only
4 )
2 and 3 only
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