Body Systems

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Across
  1. 1. protects the brain
  2. 4. carries electrical signals
  3. 5. connects bone to bone
  4. 7. pumps blood
  5. 9. largest organ
  6. 10. returns blood to the heart
  7. 12. longest bone
  8. 13. type of bone: patella
Down
  1. 1. vertebral column
  2. 2. middle layer of the skin
  3. 3. where to bones meet
  4. 6. connects muscle to bone
  5. 8. carries blood away from the heart
  6. 11. top layer of skin