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Bronchitis is a disease of

  • A.Respiratory tract
  • B.Liver
  • C.Bladder
  • D.Blood

Answer: A

Bronchitis is a disease of the respiratory tract - inflammation of the bronchi, the airways leading to the lungs.

The lining swells and produces excess mucus, causing the persistent cough. Acute bronchitis usually follows a viral infection; the chronic form is caused chiefly by smoking.

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