• Pathomorphology of Pulmonary Emphysema:
• Characterized by the abnormal, permanent enlargement and overdistension of airspaces distal to the terminal bronchioles, accompanied by destructive rupture of alveolar septal walls.
• Loss of alveolar surface area and elastic recoil leads to air trapping, expiratory dyspnea, and formation of subpleural bullae (bullous emphysema) or dissection of air into interlobular septa (interstitial emphysema common in cattle due to lack of collateral ventilation).
• nalysis:
• (Overdistension of alveoli with rupture of alveolar walls): Correct definition.

Correct option: (2) Overdistension of alveoli with rupture of alveolar walls