What is the location and importance of cilia and mucus in the respiratory system.

Cilia which are hairs inside the respiratory system are like air filters. Mucus, however, traps smaller particles like pollen and smoke.

Explanation:

The cilia provides movement to the mucus so it can be expectorated and traps dirt inhaled in the air.

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Explanation:

Mucus and cilia help filter dust and dirt. Cilia are small, hair-like structures in the nasal passage and trachea. Mucus is also found in the nasal passage and the trachea.

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