Across
- 2. another name for hardening of the arteries
- 5. the group of pacemaker cells that are near the entrance of the superior vena cava
- 11. the third step in the blood circulation of the heart
- 14. blood vessels that carry blood back to the heart
- 16. thin layer that lies within the chambers
- 17. step seven in the blood circulation of the heart
- 18. blood vessels that carry blood away from the heart
- 19. also called white blood cells
- 22. condition with a higher number of white blood cells than normal
Down
- 1. middle layer that mostly consists of the cardiac mucsle
- 3. higher number of red blood cells than normal
- 4. also called red blood cells
- 6. step 13 in the blood circulation of the heart
- 7. the first step in the blood circulation of the heart (superior/inferior)
- 8. another name for mitral valve
- 9. a heartbeat below 60 bpm
- 10. outside layer of the heart that helps reduce friction
- 12. heart relaxation
- 13. tissue death is called _________
- 15. structure that separates the lower chambers of the heart
- 20. heart contraction
- 21. an inherited blood clotting disorder