What is Asthma?

Asthma is a chronic (long-term) disease of our airways which are the part of our respiratory (breathing system).

The air which we breathe in through our nose enters into our lungs through the wind-pipe called trachea. This divides into two main tubes –the airways called bronchial tubes.

Each bronchial tube on entering the lungs further divides into smaller tubes or branches called the bronchioles. At the end of each bronchiole are sacs like structures called the air sacs or the alveoli. The exchange of oxygen into and carbon dioxide out of our lungs takes place at the alveoli (air sacs).