without the respiratory system, which includes the nose, throat, voice box, windpipe, and lungs. At the top of the respiratory system, the nostrils (also called nares) act as the air intake, bringing air into the nose, where it's warmed and humidified. Tiny hairs called cilia 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. Air can also be taken in through the mouth. These two openings of the airway…
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