lungs

• Mucus is a thick, slimy substance
• produced by cells lining the airways
• helps to trap foreign particles such as
• dust, pollen, and bacteria,
• preventing them from entering the lungs.
• sometimes excess mucus
• caused by
  • allergies,
  • infections, and
  • smoking.
• resulting in
  • congestion
  • dyspnea
  • coughing
  • wheezing,
• Treatment options depend on the underlying cause
  • bronchodilators and
  • corticosteroids, as well as
  • lifestyle
    • quitting smoking and
    • avoiding triggers such as allergens.