Across
- 3. tough membranous sac that surrounds the heart
- 6. narrowing of the coronary arteries due to the accumulation of plaque and inflammation
- 7. pumps blood away from the heart
- 9. the top number of a blood pressure reading
- 11. rest and digest
- 13. the majority percentage of blood is made up by
- 15. node most important node in the cardiac conduction system
- 18. lower than 60 bpm
- 19. node found on the right atrial wall near the center of the heart
- 20. preload
Down
- 1. pressure sensors
- 2. valve between the left atrium and let ventricle
- 4. amount of blood pumped during one beat
- 5. formed elements / total blood volume
- 8. the printout of the ECG
- 10. hardest working chamber of the heart
- 12. maintains resting heart rate
- 14. cardiac muscle
- 16. output HR * SV
- 17. pumps blood to the heart