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Respiratory System
Review and Quiz
| Term | Definition |
|---|---|
| pharynx | the junction in the throat of the alimentary canal and the trachea. |
| epiglottis | A flap of tissue that covers the trachea during swallowing, preventing food from entering the lungs. |
| larynx | The voicebox; contains the vocal cords. |
| trachea | The tube between the larynx and bronchi through which air travels to the lungs; also called the windpipe. |
| bronchus | One of two tubes connecting the trachea to each lung. |
| lung | An organ in the respiratory system consisting of sponge-like tissue that exchanges oxygen and carbon dioxide wight he blood. |
| bronchiole | A thin tube that branches from a bronchus within a lung. |
| alveolus | One of millions of tiny air sacs within the lungs where gas exchange occurs. |
| diaphragm | A sheet of muscle that forms the bottom wall of the chest cavity; It contracts during inhaling and relaxes during exhaling. |
| emphysema | A respiratory disease in which alveoli lose their elasticity, leading to difficulty in breathing. |
| regulation of breathing | Breathing is regulated by the amount of carbon dioxide in the blood. |
| nicotine | The chemical that makes tobacco addictive. |
Created by:
Shelly Sinclair
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