Question

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

Answer 1

Answer:

The nasal passage is lined with fine hair and mucus (a sticky substance secreted by the nasal glands).

When air passes through the nasal passage, dust particles and other impurities are trapped by the nasal hairs and mucus, and thus it is ensured that only clean air goes into the lungs.