Circulatory System

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Across
  1. 2. Smallest vessels
  2. 4. Receives blood
  3. 5. Carries oxygen and nutrients
  4. 7. Pumps blood
  5. 8. Pumps blood out
  6. 9. Harms the heart
  7. 11. Where gas exchange happens
  8. 12. Largest artery
  9. 14. Keep blood moving one way
  10. 15. Need extra oxygen
  11. 18. Fight infection (2 words)
  12. 20. Heart pumping action
  13. 22. Moves blood through the body (2 words)
  14. 23. Gas cells need
  15. 24. Kinds of blood (2 words)
  16. 25. Carry blood away
  17. 26. Carry oxygen (2 words)
  18. 27. Tubes that carry blood (2 words)
Down
  1. 1. Liquid in blood
  2. 3. Waste gas
  3. 6. Wall in the heart
  4. 8. Carry blood back
  5. 10. Needed substances from food
  6. 13. Help blood clot
  7. 16. Basic body units
  8. 17. Tiny air sacs
  9. 19. Stops bleeding
  10. 20. Good foods for the body (2 words)
  11. 21. Keeps heart healthy