Respiratory System
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13 terms
Terms | Definitions |
|---|---|
 breathing | the mechanical movement of air into and out of the lungs |
| external respiration | exchange of gases between the atmosphere and blood |
| internal respiration | exchange of gases between the blood and the cells of the body |
| trachea | a long tube lined with rings of cartilage, also called the windpipe, |
| bronchi | either of the two main branches of the trachea, two short branches located at the lower end of the trachea that carry air into the lungs. |
| bronchioles | small branches of the bronchi that are dead ends with tiny air sacks called alveoli at the end |
| lungs | main organs of the respiratory system, where gas exchange takes place |
| alveolus | air sac at the end of bronchiole where O2 and CO2 are exchanged from capillaries |
| asthma | A serious condition where the bronchioles in the lungs become narrowed and make breathing difficult |
| bronchitis | Inflammation of the bronchial tubes, which causes coughing and mucus production |
| pnuemonia | infection of lung when alveoli becomes filled with fluid |
| emphysema | disease in which the tissues of the lungs lose elasticity, making breathing very difficult |
| lung cancer | a lung disease in which cells in the lungs grow out of control |
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