Across
- 1. carries blood to the heart
- 5. how many chambers are in mammals hearts
- 7. force of the blood stretching arteries
- 8. largest vein in the body
- 9. where the blood goes to exchange CO2 for Oxygen
- 12. the gas found in blood in arteries
- 13. top chambers of the heart
- 14. largest artery in the body
- 15. gas found in the blood in veins
- 16. blood pressure when the heart is at work
- 17. heart rate range where heart should be before workout
- 18. beating of heart to pump blood through body
Down
- 2. instrument used to hear heart beat
- 3. blood pressure when heart is at rest
- 4. only artery in the body that carries de-oxygenated blood to the lungs
- 6. only vein in the body that carries oxygenated blood to the lungs
- 8. doesn't allow blood to flow backwards in heart
- 10. carries blood away from the heart
- 11. bottom chambers of the heart