Across
- 2. lack of adequate blood supply to the heart
- 3. blood cell formation
- 6. Blood away from the heart
- 8. abnormally shaped hemoglobin
- 11. atria contact
- 12. consists of 45%,RBC, WBC,platelets
- 13. closing of AV valves
- 14. contraction of ventricles
- 16. Valves prevent blood backflow
- 18. high blood pressure
- 20. decrease in oxygen-carrying ability of blood
Down
- 1. ventricles relaxed
- 4. distributes the impulse out to the ventricles
- 5. graphic record of heart activity
- 7. transports o2 in blood
- 9. Walls 1-cell thick
- 10. iron-containing protein, binds to o2
- 15. defend body against infections and tumors
- 17. when sound begins to appear
- 19. the SA node is