Across
- 2. prevent backflow of blood
- 6. cardiac muscle
- 9. lining of the chambers and valves of the heart
- 11. outer layer of the heart
- 14. blood cell formation
- 15. carries on the signal from the SA Node to the bundle of his
- 16. pumps blood out
- 17. graphic record of heart activity
- 18. uncoordinated shuddering of heart muscles, useless pump
- 19. pacemaker of the heart
- 20. decrease in oxygen carrying ability of blood
Down
- 1. abnormal or unusual heart sounds
- 3. clogged coronary vessels
- 4. circuit highly resistant to blood flow
- 5. Fibers distribute the impulse out to the ventricles
- 7. of his Series of "wires” that carry the electrical impulses into the lower chambers through the septum
- 8. wall between artia and ventricles
- 10. anchors valve flaps in their closed position
- 12. lack of adequate blood supply to the heart
- 13. receives blood