Respiratory zone
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The respiratory zone is the site of O2 and CO2 exchange with the blood.
The respiratory bronchioles and the alveolar ducts are responsible for 10% of the gas exchange. The alveoli are responsible for the other 90%.
| Respiratory system - [http://encycl.opentopia.com/ edit] |
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| Nose > Nasal cavity | Pharynx | Larynx | Trachea | Lungs | Conducting zone | Respiratory zone |
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