The respiratory tract refers to all parts of the respiratory system that serve as pathways between the outside world and the alveoli. In a narrower sense, the respiratory tract only includes the air-conducting components. In clinical usage, however, ... [more]

Bronchial asthma is a chronic, inflammatory disease of the respiratory tract, which is characterized by bronchial hyperreactivity and respiratory obstruction.

Etiology
The development of bronchial asthma is a multicausal process, which is caused by ... [more]