The chronic disorder in which alveolar walls are damaged leading to decrease in respiratory surface area is
Emphysema is a chronic disorder in which alveolar walls are damaged and so respiratory surface is decreased. One of the major causes of this is cigarette smoking.
Asthma is a difficulty in breathing causing wheezing due to inflammation of bronchi and bronchioles.
Asbestosis is a chronic lung condition that is caused by prolonged exposure to high concentrations of asbestos fibers in the air.
Bronchitis is an inflammation of the bronchi.