Question

___________ is the swelling of the lining of bronchial tubes.

Answer 1

Bronchi:

1. The two large tubes in the respiratory system that carries air from the windpipe to the lungs are known as bronchi.
2. The inflammation of the bronchi leads to a respiratory disorder known as bronchitis.
3. Bronchitis is mainly caused by an infection. But sometimes exposure to air pollutants like carbon monoxide, and excessive smoking of cigarettes also causes bronchitis.

Final answer:
Bronchitis is the swelling of the lining of bronchial tubes.