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Across 2. Relaxation phase of the cardiac cycle 4. Ventricles contracting on an EKG (2 Words) 8. Continuous cycle of pumping and filling (2 Words) 10. What we did to our sheep hearts 11. Science word for heart muscle 15. Carries blood to the heart 17. Carries blood away from the heart 18. Body's natural pace maker, SA (2 Words) 19. Smallest blood vessel 23. Vein blood enters the right atrium through (Superior or inferior) (2 Words) 24. Divides the heart down the middle (Sept) 25. Pauses the SA Node's signal, AV (2 Words) 27. Attaches to your skin to take an EKG 28. Contraction phase of the cardiac cycle 29. Wrap around the ventricles and signal them to contract (2 Words)

Down 1. Largest artery 3. "Three Point" (2 Words) 5. The only vein that carries oxygenated blood (2 Words) 6. Relaxation phase on an EKG (2 Words) 7. Sac around the heart 9. "Two Point", also known as Mitral (2 Words) 12. Electrical picture of the heart (EKG) 13. Doctor specializing in the heart 14. System the heart is in 16. The only artery that carried de-oxygenated blood (2 Words) 18. "Pulse Measurer" Used for blood pressure 20. SA Node firing on an EKG (2 Words) 21. Bottom chambers of the heart 22. How fast the heart beats, BPM (2 Words) 26. Top chambers where blood enters the heart