Which of the following helps prevent dust from entering the lungs?

Saliva

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Mucus

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Nose Hair

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Tongue

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Solution

The correct options are
B
Mucus

C
Nose Hair

The mucus and hair in the nasal cavity trap dust and other unwanted particles from entering the lungs. This causes mucus to turn black especially when soot is present.

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Similar questions

The lining of the nasal chamber has mucus which prevents pollen and dust particles from entering into the lungs.

___ have hair to trap dust particles present in the air and stop them from entering our lungs.

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