Across
- 5. Person who invented the stethoscope
- 7. The heart is part of the ____________ system
- 8. System that controls the rhythm of the heart
- 9. Animal that can mirror a human's heart rate
- 10. Animal with the largest heart
- 11. Biggest artery in the body
- 13. Animal with the smallest heart
- 14. Leading cause of death in the United States
Down
- 1. Size of a typical heart valve
- 2. Most common day of the week to experience a heart attack
- 3. Age of youngest person to receive heart surgery
- 4. Received first implantable pacemaker in 1958
- 6. First person to perform open heart surgery
- 12. Animal with a lopsided heart