Across
- 1. Word meaning red blood cell
- 3. The pacemaker of the heart
- 5. High blood pressure
- 7. The number of contractions per minute
- 10. Prefix meaning "white"
- 12. Lower chambers of heart; pumps blood
- 14. Slow heart rate
- 15. Fast heart rate
- 17. Specialist of the heart
- 19. Scientific word for heart attack
- 20. Prefix meaning muscle
- 21. Carry blood away from heart
Down
- 2. Prefix meaning "excessive"
- 3. Pumps oxygenated blood to the entire body
- 4. Return blood to heart
- 6. Measures electrical activity of heart
- 8. Prefix meaning "upon"
- 9. Characterized by low levels of hemoglobin
- 11. Root word meaning heart
- 13. Outer layer of heart
- 16. Blood vessels that connect arteries and veins
- 18. Upper chambers of the heart; receive blood