Across
- 3. Liquid part of blood
- 5. Forms blood clots
- 7. a push or pull
- 10. Small knobs of tissue that allow the fluid to flow through
- 12. Silent killer
- 13. Instrument used to measure blood pressure
- 14. Give blood to someone else
- 17. system that carries needed substances to cells and carries waste products away from cells
- 20. Lower chamber of the heart
- 21. Artery walls thicken
- 23. Transfer oxygen throughout your body
- 24. Larger blood vessels that carry blood back to the heart
- 25. Chemicals that make nets
- 26. largest artery in the body
Down
- 1. organ that pumps blood
- 2. Combines with oxygen to make the cells bright red
- 4. network of veinlike vessels that return the fluid to the bloodstream
- 6. Fluid that consists of water and glucose and dissolved materials
- 8. tiny vessels where substances are exchanged between blood and body cells
- 9. First branch to the aorta
- 11. Disease Fighters
- 15. group of cells that sends out signals to make the heart muscle contract
- 16. tissue that prevents blood from flowing backward
- 18. Upper chamber of the heart
- 19. Heart muscle is blocked
- 22. blood vessels that carry blood away from the heart