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Needs to be ______ for the exchange of oxygene and carbon dioxide to occur at a rate to meet the needs of the organism.
Moistens the air
The mucus in the nose ______ and the numerous capillaires that line the nose warms the air. This is to protect the delicate tisse of the lungs.
There are other openings found here such as the ______
3) Oral Cavity
4) Eustachian Tubes
It contains ______ that secrete mucus to trap foreign particles. The cilia propel the material to the nose and throat.
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