Which of the following matches is correct?

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(A) Emphysema is a chronic disorder in which alveolar walls are damaged due to which respiratory surface is decreased. Cigarette smoking is a major ca

Vedclass · Accepted Answer

Emphysema: reduction of surface area of alveoli and bronchi

Vedclass · Answer

(A) Emphysema is a chronic disorder in which alveolar walls are damaged due to which respiratory surface is decreased. Cigarette smoking is a major cause of this. In this disease,many alveoli coalesce together to form large chambers due to the destruction of their walls. This reduces the surface area available for gas exchange. Therefore,option $A$ is correct. Pneumonia is an infection of the lungs,not an occupational disease. Silicosis is an occupational respiratory disorder caused by the inhalation of silica dust. Asthma is a difficulty in breathing causing wheezing due to inflammation of bronchi and bronchioles.

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