Question

Give reasons for the following statement:

The inside of nose is lined by a sticky fluid called mucus.

Answer 1

Nasal cavity:

1. The cavity which is enclosed by nose is called nasal cavity.
2. Nasal cavity is lined by hair and mucus.
3. Hair traps the dust particles and prevents them from reaching the lungs.
4. Mucus is a sticky fluid that forms an inner lining of nasal cavity.
5. Dust and germs stick to the mucus and prevent the entry of germs into the lungs.