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The air is:

- heated (to body temperature)
- cleansed (foreign particles attach to the mucosa of the nasal cavity and thusly removed before they reach the lungs).
- moistened (the humidity of the air increases)

All of these mechanism are designed to help the lungs to a better supply of air.

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Q: What happens as the air enters the nose or mouth?
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Does Mucus helps moisten warm and filter the air as it enters the nose?

True Mucus helps moisten warm and filter the air as it enters the nose.


What does the air pass through after leaving the mouth or nose?

The air that enters the nose is the same that is found in our lower atmosphere: roughly 78% nitrogen, 21% oxygen, and 1% other. Once the air passes through the nostrils, some of the larger particles like dust and sand are filtered out before it gets to our lungs.


Air enters the nasal cavity of the respiratory system through what?

Through nose.


Explain how the respiratory system of a human allows to them to survive in the environment in which they live in?

It starts in the nose/mouth, then the air enters the lungs. It then goes into the bronchi ole into the air sac. It is then transported to the circulatory system to produce waste. There is another way which is that the nose/mouth inhales air then it travels down the trachea into the lungs where the waste is produced it then goes to the bronchi then into the circulatory system.


What is covered with damp air and are found in the top of the nose?

The turbinates at the top of the nose are moist and exist to moisten air as it enters the respiratory tract.