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20-10-2016
Health

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How does oxygen enter the lungs?

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20-10-2016

after you take a breath the air travels through your windpipe and into the lungs

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cavano73 cavano73

20-10-2016

As your lungs expand, air is sucked in through your nose or mouth. The air travels down your windpipe and into your lungs. After passing through your bronchial tubes, the air finally reaches and enters the alveoli

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