★ Gaseous Exchange in Humans Quiz
Why the gaseous exchange becomes less efficient for an emphysema patient?
A. alveolus wall is moist
B. the total surface area of alveolus decreases
C. alveolus is elastic
D. alveolus decrease in size
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Name A
A. Trachea
B. Lung
C. Alveolus
D. Blood capillary
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