human body systems

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Across
  1. 3. works together to break down nutrients
  2. 4. sends signals through body
  3. 6. protects heart
  4. 7. pumps blood
  5. 10. movement support make blood cells
  6. 11. main signal sender
  7. 12. helps with movement
Down
  1. 1. moves the oxygen with the blood
  2. 2. digests food
  3. 5. moves the blood
  4. 8. protects brain
  5. 9. where bones meet
  6. 13. takes in oxygen