Why do blebs form on lungs?

Related questions

1. What causes trapped air in lungs?
2. How can you tell the difference between asthma and COPD?
3. How long can healthy lungs hold breath?
4. What can be done for a Hyperinflated lung?
5. What causes high blood pressure in the lungs?
6. Do hyperinflated lungs heal?
7. What is a good reading on a peak flow meter?
8. What is the difference between fev1 and FVC?
9. Is a pulmonary function test painful?
10. What does peak flow tell us?

Tags

1. #rupture
2. #spontaneous
3. #pneumothorax
4. #sudden
5. #tissue
6. #things
7. #formation
8. #likely
9. #causing
10. #space
11. #small
12. #pressure
13. #changes
14. #blebs
15. #primary
16. #breath
17. #cause
18. #pleural