Across
- 2. prolonged angina and chest pain
- 3. carries on the signal from the SA node to the bundle of his
- 4. graphic record of the heart activity
- 7. relaxation of ventricles
- 11. atria contact
- 12. semilunar valves close at end of systole
- 13. distributes the impulse out to the ventricles
- 17. lack of edequate blood supply to heart
- 18. carry the electrical impulses into the lower chambers
- 19. closing of AV valves
- 20. contraction of ventricles
Down
- 1. events of one heartbeat
- 5. very slow heart rate
- 6. uncoorinated shuddering of heart muscle, useless pump
- 8. heart muscle deprived of oxygen
- 9. rapid heart rate
- 10. abnormal or unusual heart sounds
- 14. sinoatial node, pacemaker of the heart
- 15. ventricles contract
- 16. ventricles relax