thin, elastic alveolar walls are destroyed

A) sleep apnea
B) tuberculosis
C) pneumonia
D) bronchitis
E) asthma
F) emphysema

Alveolar Walls

Thin layers of tissue that form the structure of alveoli, the tiny air sacs in the lungs where gas exchange between the air and blood takes place.

Emphysema

A long-term, progressive disease of the lungs that primarily causes shortness of breath due to over-inflation of the air sacs.