Question

why hair and mucus are present in the national passage​

Answer 1

Answer:

Fine hair and mucus act as the first line of defense in the nasal passage. They keep foreign particles that could cause illness from entering the body. The hairs (cilia) and mucus along the nasal cavity are responsible for trapping dust and other particles in the air you inhale and sweeping it out again.

Answer 2

Hola!!

●Presence of hair and mucus in the nasal passage helps in filtering the dirt and impurities by preventing it from entering the body.

Hope this helps you ___!!