Biology, asked by rk2233043, 4 months ago

how is the respiratory passage kept free of the dust particals​

Answers

Answered by kafeelabatool404
1

Answer:

hair is present in the nasal passage (nose) that helps in removal of dust particles

Answered by pv057966
2

When the air enters into respiratory passage it first enters into nasal cavity here there are small hair present and this purifies the air(the dust particles are stuck to it) and also the temperature of air is brought near to the body temperature.

Thus,the respiratory canal is free from dust particles.

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