If by "broken" you mean not able to exchange air (CO2 and Oxygen), then the likely answer is Emphysema. The air sacs (called aveoli) are elastic-like and they inflate and collapse completely in a...
Pulmonary alveolusAn alveolus (plural: alveoli, from Latin alveolus, "little cavity") is an anatomical structure that has the form of a hollow cavity.I LOVE BIOLOGYCya :-)xx
Lungs contain many tubes:trachea,bronchi,bronchus,bronchi oles and At the end of each bronchi ole is a special area that leads into clumps of teeny tiny air sacs called alveoli.
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