Across
- 4. rapid heart rate
- 6. ventricles contract
- 8. thrombus breaks away from vessel wall and floats freely
- 11. outer layer
- 13. contraction of ventricles
- 15. graphic record of heart activity
- 17. wall between atria & ventricles
- 19. foreign substance that immune system recognizes
- 20. endothelium lines chambers
Down
- 1. clumping caused by antibodies binding to antigens on RBCs
- 2. expansion & recoil of an artery with each beat of left ventricle
- 3. high blood
- 5. blood circulates inside closed transport systems
- 7. volume of blood pumped out by one ventricle with each beat
- 9. prevent backflow of blood
- 10. peak of ventricular contraction
- 12. blood cell formation
- 14. iron-containing protein, binds to O2
- 16. artery walls thicken due to fatty deposits
- 18. uncoordinated shuddering of heart muscle, useless pump