Across
- 3. from myocardium
- 8. graphic record of heart activity
- 9. outer layer (pericardium)
- 12. carries on the signal from the SA Node to the bundle of his
- 16. Endothelium lines chambers
- 19. above diaphragm
- 20. wall between atria and ventricles
Down
- 1. prolonged angina, heart cells may die
- 2. contractions of ventricles
- 4. volume of blood pumped out by one ventricle with each beat
- 5. rapid heartbeat
- 6. uncoordinated shuddering of heart muscle, useless pump
- 7. distributes the impulse out to the ventricles
- 10. Cardiac Muscle
- 11. abnormal or unusual heart sounds
- 13. prevent the backflow of blood
- 14. series of “wires” that carry the electrical impulses into the lower chambers through the septum
- 15. events of one heartbeat
- 17. pacemaker of the heart
- 18. relaxation of ventricles