Question

Explain how, the air we breathe in gets cleaned while passing through the nasal passage.

Answer 1

The nasal passage cleans the air you breathe through three simple, effective mechanisms:

• Nasal Hairs (Vibrissae): These act as a coarse filter at the entrance of the nostrils, trapping large dust particles and debris.
• Mucus: This sticky lining traps smaller particles, such as fine dust, pollen, and bacteria, preventing them from travelling deeper into the respiratory tract.
• Cilia: These are tiny, hair-like structures that beat in a rhythmic motion. They act like a conveyor belt, sweeping the trapped particles in the mucus back toward the throat to be swallowed or cleared by coughing.