Across
- 2. Heart relaxation phase
- 6. Largest artery in the body
- 8. Small vein
- 9. Prevents backflow of blood
- 11. Upper chamber of the heart
- 14. Narrowing of blood vessels
- 15. volume Amount of blood pumped by the heart in one beat
- 17. Breathing technique affecting blood flow
- 21. fibers Fibers conducting electrical signals in the heart
- 23. Irregular heart rhythm
- 24. Outer layer of the heart
- 25. Blood vessel carrying blood away from the heart
- 26. Heart pumps more blood when filled with more
Down
- 1. Blood vessel carrying blood to the heart
- 3. Inner layer of the heart
- 4. Test to measure heart’s electrical activity
- 5. Relating to the lungs
- 7. Node Controls heart rhythm after the SA node
- 9. Thickness of blood
- 10. Node Heart’s natural pacemaker
- 12. Widening of blood vessels
- 13. Small artery
- 16. Muscle layer of the heart
- 18. Lower chamber of the heart
- 19. Heart contraction phase
- 20. Protective sac around the heart
- 22. cava Large vein carrying blood to the heart
- 27. Wall dividing the heart