Lungs 

Lung disease is one of the most common diseases that tens of millions of people around the world suffer from; Smoking, infections and genetics are the causes of many lung diseases.

The lungs are part of the respiratory system that expand and contract thousands of times a day to absorb oxygen and release carbon dioxide. Lung diseases can occur in any part of the device due to a problem.

The trachea branches into tubes called bronchi and then smaller tubes that scatter throughout the lungs; Diseases that impair airway function include the following:

Asthma , Chronic obstructive pulmonary disease , Chronic bronchitis ,Emphysema , Acute bronchitis , Cystic fibrosis , ...