| Across |
| 2. |
where air enters the body |
| 5. |
carries needed substances to the cells and waste away from the cells |
| 7. |
pumps the heart |
| 8. |
flap that covers the trachea during swallowing |
| 10. |
brings oxygenated blood away from the heart |
| 11. |
filters the blood |
| 13. |
area where oxygen and carbon dioxide are exchanged with the blood |
| 14. |
area behind the mouth and nose that serves as a passageway for food and air |
|
|
| Down |
| 1. |
tube that leads to the lungs |
| 3. |
pumps the blood |
| 4. |
muscle that causes the lungs to inflate and deflate |
| 6. |
takes in air and releases waste gas |
| 9. |
brings deoxygenated blood back to the heart |
| 12. |
branches at the base of the trachea |
|
