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Gaseous Exchange in Humans › View

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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Digestive System › View

gastrostomy

A. New opening of the stomach to the outside of the body.

B. New opening between the stomach and the jejunum.

C. Formation of new glucose (by liver cells).

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