Circulation

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