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Describe the path that oxygen travels when you breathe.
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Describe the path that oxygen travels when you breathe.

User Odisseo
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The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. This is known as diffusion. The oxygen in the blood is then carried around the body in the bloodstream, reaching every cell. When oxygen passes into the bloodstream, carbon dioxide leaves it.

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User Lionelmessi
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