Across
- 6. The valve on the left side of the heart
- 7. medical term for heart attack
- 9. deoxygenated blood returns to the lungs
- 11. lower chambers of the heart
- 13. when the heart contracts
- 17. heartbeat too fast/slow or irregular
- 18. 60-100 is the normal range in adults
- 19. carries oxygenated blood to the body
- 20. The valve on the right side of the heart
Down
- 1. small vessels where oxygen exchanges
- 2. oxygenated blood delivered to body
- 3. how many chambers does the heart have
- 4. force exerted on arteries
- 5. artery supplies blood directly to heart
- 8. largest vein in the body
- 10. muscle layer of the heart
- 12. pacemaker of the heart
- 14. largest artery in the body
- 15. when the heart relaxes
- 16. returns deoxygenated blood back to the heart
- 19. upper chambers of the heart