The correct Answer is A-4, B-3, C-2, D-1
Explanation
This question assesses knowledge of common respiratory disorders and their characteristic features or causative factors. Understanding the specific physiological changes or causes associated with each condition is crucial.
Statement-wise Analysis
- A. Asthma: This condition is characterized by inflammation of the bronchi and bronchioles, leading to difficulty in breathing.
- Statement 4: "Inflammation of bronchi and bronchioles" accurately describes a key feature of Asthma.
- Therefore, A-4 is Correct.
- B. Emphysema: This chronic obstructive pulmonary disease primarily involves damage to the alveolar walls. This damage reduces the surface area available for gas exchange.
- Statement 3: "Alveolar wall damage reducing respiratory surface" correctly identifies a primary characteristic of Emphysema.
- Therefore, B-3 is Correct.
- C. Silicosis (Occupational disorder): Silicosis is a type of pneumoconiosis caused by the inhalation of crystalline silica dust. This leads to inflammation and scarring (fibrosis) in the lungs.
- Statement 2: "Fibrosis due to dust exposure" accurately describes the pathological process in Silicosis.
- Therefore, C-2 is Correct.
- D. Cigarette smoking: This is a major risk factor and a primary cause for several respiratory diseases, including Emphysema.
- Statement 1: "Major cause of Emphysema" correctly links cigarette smoking to Emphysema.
- Therefore, D-1 is Correct.
The correct matching is A-4, B-3, C-2, D-1.
Key Takeaway
Respiratory disorders like asthma, emphysema, and silicosis have distinct pathological features or causative factors, such as inflammation of airways, alveolar damage, fibrosis from dust exposure, and cigarette smoking as a major cause for emphysema.