NEET PG DENTAL EXAM

Detailed explanation-1: -The bronchus in the lungs are lined with hair-like projections called cilia that move microbes and debris up and out of the airways. Scattered throughout the cilia are goblet cells that secrete mucus which helps protect the lining of the bronchus and trap microorganisms.

Detailed explanation-2: -Mucus. This is a sticky substance made by cells in the lining of the airways. It traps dust, smoke, and other particles from air breathed in.

Detailed explanation-3: -The airways have cells with “house cleaning” tools called cilia (small hair-like structures). They move together to push the dust, germs, and mucus out of the lungs where it can be coughed out.

Detailed explanation-4: -The mucus they produce catches most of the dust particles. Tiny hairs called cilia, covering the walls of the air tubes, move the mucus upward and out into the throat, where it is either coughed up and spat out, or swallowed.