In Emphysema, the Alveoli Become Enlarged Due to Deterioration of the Alveolar

Multiple Choice

In emphysema, the alveoli become enlarged due to deterioration of the alveolar walls. How does this lead to a lack of oxygen?

A) The surface area for exchange of oxygen is reduced due to the breakdown of the walls and increased size of the alveoli.
B) The alveolar walls thicken, making exchange more difficult.
C) The enlarged alveoli put pressure on the capillaries in the lung, causing them to break down.
D) The alveoli walls become impermeable to oxygen as they enlarge.