The lobes of the lungs are made up of millions of alveoli, which are tiny air sacs. What is the primary purpose of the alveoli?
The alveoli are the place where the gas exchange between oxygen and carbon dioxide occurs.
The alveoli exchange gases between oxygen, carbon dioxide, and carbon monoxide.
The alveoli exchange oxygen and nitrogen into the bloodstream.
An exchange between oxygen and carbon monoxide occur in the alveoli.
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