Across
- 2. heart muscle deprived of O2 -> crushing chest pain
- 4. relaxation of ventricles
- 6. series of “wires” that carry the electrical impulses into the lower chambers through the septum
- 10. records the electrical activity of the heart
- 12. events of one heartbeat
- 16. prolonged angina, heart cells may die
- 17. cardiac muscle can contract spontaneously and independently
- 18. contraction of ventricles
- 19. lack of adequate blood supply to heart
- 20. closing of AV valves
Down
- 1. volume of blood pumped out by one ventricle with each beat
- 3. clogged coronary vessels
- 5. rapid heart rate (>100 beats/min)
- 7. atrioventricular node, carries on the signal from the SA Node to the Bundle of His
- 8. abnormal or unusual heart sounds
- 9. blood cell formation; occurs in red bone marrow of the skull, pelvis, ribs, sternum, humerus, femur
- 11. semilunar valves close at end of systole
- 13. uncoordinated shuddering of heart muscle, unless pump
- 14. sinoatrial node, pacemaker of the heart
- 15. distributes the impulse out to the ventricles