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Nasal cavities act as a both a filter and a humidifier, filtering out much of the contaminants in the air that you breathe, and humidifying the air prior to the airs entrance into the lower respiratory tract (trachea, lungs).

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15y ago
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15y ago

A Nasal Cavity is it warms, moistens, filters and smells in coming air.

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Q: What does the nasal cavities do in a human body?
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