MICROANATOMY

Detailed explanation-1: -The trachea is also lined with cilia, which sweep fluids and foreign particles out of the airway to keep them out of the lungs.

Detailed explanation-2: -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-3: -Nose has two openings which are called nostrils. Nostrils have fine hair called cilia and mucus to trap dust particles present in the inhaled air and stops them from entering our respiratory system.

Detailed explanation-4: -Cilia propel a liquid layer of mucus that covers the airways. The mucus layer traps pathogens (potentially infectious microorganisms) and other particles, preventing them from reaching the lungs.

Detailed explanation-5: -The respiratory system is lined with a mucous membrane that secretes mucus. The mucus traps smaller particles like pollen or smoke. Hairlike structures called cilia line the mucous membrane and move the particles trapped in the mucus out of the nose.