Food and Respiration part 2: Breathing and Smoking
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16 terms
Terms | Definitions |
|---|---|
 inhale | to breathe in |
| exhale | to breathe out |
| trachea | windpipe |
| bronchus | passageway leading from the trachea to a lung |
| bronchi | plural of bronchus |
| bronchiole | very small branches of bronchi that extend into the lungs |
| alveolus | a tiny sac for holding air in the lungs |
| alveoli | plural of alveolus |
| diaphragm | Large, flat muscle at the bottom of the chest cavity that helps with breathing |
| tar | a thick, sticky, dark fluid produced when tobacco burns |
| nicotine | stimulant drug in tobacco that increases heart rate and blood pressure |
| carbon monoxide | colorless, odorless, and poisonous gas produced by cigarettes |
| capillary | smallest blood vessel; brings nutrients and oxygen to the tissues and absorbs carbon dioxide and waste products |
| asthma | lung disorder in which the bronchial tubes contract quickly and cause shortness of breath, wheezing, or coughing; may occur as an allergic reaction |
| 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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