March 29, 2017

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Where does the exchange of carbon dioxide and oxygen with the blood occur

the bronchi


alveolar ducts

alveolar sacs

It seems that you are asking different questions under different names. You can ask more than one question on a post.

Think of it as transportation. Where does the "end of the line" occur?

If that doesn't help, try

I hope this helps. Thanks for asking.

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