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What is the bronchial tree?

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In your lungs, each bronchial tube branches into a maze of smaller and smaller tubes. Tiny hairs inside (cilia) help trap dust and germs that you cough up, sneeze out, or swallow. The smallest tubes are called bronchioles. These end in tiny air sacs called alveoli. This is where your lungs deliver oxygen to your blood and take back carbon dioxide. Doctors call this system of tubes and sacs the bronchial tree.

Reviewed by Minesh Khatri on May 15, 2020
Reviewed by Minesh Khatri on May 15, 2020

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What steps can I take to breathe better if I have COPD, when the humidity levels are too high or low?

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