Across
- 1. Blood circulation inside closed transport systems
- 3. Y-shaped proteins secreted by WBCs that attach to antigens
- 5. Smooth muscle & elastic tissue
- 8. Event of one heart
- 12. closing of AV valves
- 14. Blood cell formation
- 16. Clumping is caused by antibodies binding to aantigenson RBC's
- 17. Volume of blood pumped by one ventricle with each beat
- 19. Sinoatrial node pacemaker of the heart
Down
- 2. Graphic record of heart activity
- 4. Atrioventricular node carries on the signal
- 6. 55%
- 7. Clot in unbroken blood vessel
- 9. 45%
- 10. Thrombus breaks away from the vessel wall and floats freely
- 11. Is a Hereditary bleeding disorder, a lack of clotting factors
- 13. Cardiac muscle cells can contract spontaneously and independent
- 15. Foreign substances that the immune system recognizes
- 18. Fibrous connective tissue on outside support and protect vessels
- 20. Semilunar valves close at the end of the systole