Question

which of the following conditions is characterized by the destruction of the walls of the alveoli resulting in over expanded air sacs?
a emphysema
b histoplasmosis
c pneumoconiosis
d empyema

Explanation:

Emphysema is a lung - disease where the alveoli walls are damaged, causing air sacs to over - expand. Histoplasmosis is a fungal infection, pneumoconiosis is caused by inhaling dust particles leading to lung fibrosis, and empyema is a collection of pus in a body cavity, usually the pleural cavity.

Answer:

A. emphysema