Across
- 5. upper champers,receive blood
- 7. contraction
- 9. unusual heart beat sound
- 12. lower chambers discharge blood
- 13. disease of hartmuscle that makes it harder to pump blood.
- 16. red blood cells
- 18. venous valves weaken
- 19. a serous membrane that surrounds the heart
- 20. small beds that drain capillary beds
- 21. blood flow to an area of the brain is blocked
Down
- 1. Left AV valve
- 2. slow heart rate
- 3. leading cause of death
- 4. to hear heart
- 6. rapid heart rate
- 8. SA node
- 10. this is the layer of the heart wall that actually contracts.
- 11. relaxation
- 14. right AV valve
- 15. feed small capillary beds
- 17. weakened valves in large veins