Across
- 4. graphic record of heart activity
- 7. sinoatrial node,pacemaker of the heart
- 13. system built into heart tissue and sets basic rhythm
- 15. clot in unbroken blood vessel
- 16. contraction of ventricles
- 19. abnormally shaped hemoglobin
- 20. decreases in oxygen-carrying ability of blood
Down
- 1. ventricles contract
- 2. cardiac muscle
- 3. blood cell formation
- 5. distributes the impulse out to the ventricles
- 6. circuit blood to/from all body tissues
- 8. iron-containing protein, binds to O2
- 9. wall between atria and ventricles
- 10. endothelium lines chambers
- 11. relaxation of ventricles
- 12. thrombus breaks away from vessel wall and floats freely
- 14. series of "wires" that carry the electrical impulses into lower chambers through the septum
- 17. water 90%, ions, proteins, gases, nutrients,wastes, hormones
- 18. events of one heartbeat