Across
- 3. The alternating expansion and relaxation of the artery wall.
- 5. Pushes blood out to your body.
- 6. The trachea branches into two large tubes.
- 7. Microscopic blood vessels.
- 9. Each bronchus branches into smaller tubes.
- 11. The exchange of gases between the blood and the body’s cells.
- 13. This is mostly made out of water.
- 14. Brings blood back to your body.
- 15. Pumps oxygenated and deoxygenated blood.
Down
- 1. The exchange of gases between the atmosphere and the blood.
- 2. Collect and stick to the vessel at the site of the wound.
- 4. The mechanical movement of air into and out of your lungs.
- 8. A measure of how much pressure is exerted against the vessel walls.
- 10. Hairlike structures.
- 12. What protects the heart and the lungs.