10. What is the function of the cilia in the nasal cavity?
A. To trap particles of dust and dirt
B. To moisten and warm the dust
C. To add moisture to the air
D. To direct the flow of air
A. To trap particles of dust and dirt
B. To moisten and warm the dust
C. To add moisture to the air
D. To direct the flow of air
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Answer:
B.To moisten and warm the dust
Hairlike structures called cilia line the mucous membrane and move the particles trapped in the mucus out of the nose. Inhaled air is moistened, warmed, and cleansed by the tissue that lines the nasal cavity.