In the chronic pulmonary disease emphysema, the alveolar walls lose their elasticity, become overinflated, and eventually rupture.
Emphysema is a lung condition that develops when the alveolar walls in our lungs are harmed. It is possible for an obstruction (blockage) to form, trapping air in your lungs. It is a gradual degenerative disease, that affects the suppleness of the alveolar walls, which ultimately affects the lungs' capacity to exhale air.
A serous membrane called a pleura folds back on itself so as to to create a two-layered membranous sac called pleural sac. The parietal pleura, i.e. the outer layer's name, is connected to the to the chest wall.
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