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Unformatted text preview: In the lungs the bronchi branch into many tubes, the smallest of these tubes is called a bronchiole At the end of each bronchiole is an air sac called a alveolus, a site for gas exchange Movement of the rib muscles and the diaphragm, a sheet of muscle that separates the chest cavity from the abdominal cavity, pull air into the lungs and push air out Breathing rate is controlled by the brain stem that detect carbon dioxide in the blood...
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This note was uploaded on 11/16/2011 for the course CHEM 104 taught by Professor Yang during the Fall '04 term at University of California, Berkeley.
- Fall '04
- Organic chemistry