EVERYDAY SCIENCE

Detailed explanation-1: -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. Inhaled air is moistened, warmed, and cleansed by the tissue that lines the nasal cavity.

Detailed explanation-2: -Mucus has an important role in your lung’s immune response because it traps irritants in your airways and helps allow your body to expel them through coughing. This helps protect you from infection.

Detailed explanation-3: -The major function of mucus is to protect the lung through mucociliary clearance against foreign particles and chemicals entering the lung.

Detailed explanation-4: -Mucus acts as a physical barrier, trapping inhaled particles and pathogens, whilst cilia move both the mucus layer and fluid in the underlying periciliary layer.

Detailed explanation-5: -In respiratory tract, cilia helps in expelling the mucus and particles trapped in it, towards the pharynx.