Across
- 2. clumping caused by antibodies
- 5. ventricles relax
- 6. decrease in oxygen carrying ability of blood
- 10. atria contract
- 11. pacemaker of the heart
- 12. cell fragments, needed for clotting blood
- 14. contraction of ventricles
- 16. very slow heart rate
- 18. rbc, transport O2 in blood, biconcave discs, anucleate
- 19. blood cell formation
- 20. blood circulates inside closed transport systems
Down
- 1. foreign substance that immune system recognizes
- 3. bone marrow becomes cancerous; high number of wbc
- 4. graphic record of heart activity
- 7. output (co) = (hr) x (sv)
- 8. cycle events of one heartbeat
- 9. wbc, defend body against infection and tumors
- 13. ventricles relax
- 15. clot in unbroken blood vessel
- 17. semilunar valves close at end of systole