ANIMATED HEALTHCARE LTD / SCIENCE PHOTO LIBRARY ANIMATED HEALTHCARE LTD / SCIENCE PHOTO LIBRARY
Alveoli in the lung. Computer artwork showing the alveoli (spheres) and bronchioles (tubes) of the lungs. The alveoli are the tiny air sacs of the lungs where gases are exchanged between the air in the lungs and the blood. Bronchioles are small airways that carry inhaled air to the alveoli, and used air from them.
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