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Which of the following occurs in the upper respiratory system?
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Which of the following occurs in the upper respiratory system?

User Edur
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2 Answers

1 vote

Answer:

air is filtered and moistened

Step-by-step explanation:

User Gabriele Petronella
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6 votes
Head Area: The nose and mouth take in oxygen that goes through the throat and into the lungs. There are 2 ways, but a little flap opens when oxygen comes in and closes right after. This is used so food doesn't get in the wrong way.
Chest Area: Capillaries in the lungs move the oxygen to the heart to pump it throughout the body.
User Marcelo Austria
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