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