Pathologies of the Respiratory System

Chronic Bronchitis

A disease in which the airways have become inflamed due to recurrent exposure to an inhaled irritant (such as cigarette smoke).

Emphysema

Progressive, long-term loss of lung function, usually due to smoking.

Asthma

A chronic inflammatory disease of the bronchial tubes, often triggered by an allergic reaction.

Bronchospasm

Contraction of the smooth muscle in the walls of the bronchi and bronchioles, tightening and squeezing the airway shut.

Eupnea

Easy or normal breathing.

Apnea

The temporary absence of spontaneous respiration.