| A | B |
|---|
| pharynx | a shared pipe that carries air and food |
| trachea | the windpipe |
| epiglottis | a flap of tissue that blocks food from entering the trachea |
| bronchi | the two major tubes leading to the lungs |
| bronchioles | hundreds of small tubes in the lungs |
| alveoli | the spheres at the end of the bronchioles surrounded by capillaries |
| oxygen | the gas that diffuses into the bloodstream at the alveoli |
| carbon dioxide | the gas that diffuses from the bloodstream into the alveoli |
| emphysema | a disease caused by damaged alveoli |
| bronchitis | a condition that is caused by swollen or infected bronchi/bronchioles |
| asthma | a condition that includes wheezing, couching, shortness of breath, and chest tightening |
| lungs | you have two of these; contain the bronchi, bronchioles, and alveoli |
| diaphragm | the dome-shaped muscle that inflates and deflates the lungs |
| inhalation | air gets sucked IN through the mouth/nose |
| exhalation | air gets forced OUT of the mouth/nose |
