| __ | 1. | Air sacs | | A. | Sticky think fluid that traps dust, germs, and other things. |
| __ | 2. | Bronchi | | B. | tube that carries air from larynx to lungs. |
| __ | 3. | Bronchioles | | C. | two branches from the trachea that go into the lungs. |
| __ | 4. | Cilia | | D. | In the lungs, these tubes branch into smaller tubes. |
| __ | 5. | Diaphragm | | E. | Vocal chords are two structures stretching arose the ______. |
| __ | 6. | Larynx | | F. | Where oxygen enters the blood and carbon dioxide leaves. |
| __ | 7. | Mucus | | G. | Carries gases between the outside air and your blood |
| __ | 8. | Respiratory System | | H. | Tiny hairlike structures that help clean the air you breathe |
| __ | 9. | Sinus | | I. | These warm and moisten the air that we breathe in. |
| __ | 10. | Trachea | | J. | A muscle that contracts and relaxes to push air in and out. |