Tiny hairs called cilia (SIL-ee-uh) protect the nasalpassageways and other parts of the respiratorytract, filtering out dust and other particles thatenter the nose through the breathed air. ... Thetrachea, orwindpipe,is the continuation of theairway below the larynx.
Tiny hairs called cilia (SIL-ee-uh) protect the nasal passageways and other parts of the respiratory tract, filtering out dust and other particles that enter the nose through the breathed air.
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Tiny hairs called cilia (SIL-ee-uh) protect the nasal passageways and other parts of the respiratory tract, filtering out dust and other particles that enter the nose through the breathed air. ... The trachea, or windpipe, is the continuation of the airway below the larynx.
Answer:
Tiny hairs called cilia (SIL-ee-uh) protect the nasal passageways and other parts of the respiratory tract, filtering out dust and other particles that enter the nose through the breathed air.