Ncert Exercises & Solutions

Incidence of emphysema a respiratory disorder is high in cigarette smokers. In such cases

1. the bronchioles are found damaged
2. the alveolar walls are found damaged
3. the plasma membrane is found damaged
4. the respiratory muscles are found damaged

(b) Emphysemais a chronic disorder in which alveolar walls are damaged due to the infacation or obsomal distersion. It is a respiratory disorder caused by ciggrette
infacation or obsomal distersion. It is a respiratory disorder caused by ciggrette smoking and inhalation of other smoke or otoixic substances over a period of time

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