This or that science crossword puzzle

1234567891011121314151617181920
Across
  1. 5. work with bones to move body
  2. 7. this system regulates body growth
  3. 11. cardiac muscle
  4. 12. this organ is part of the digestive system
  5. 13. this system protects organs and maintains body temperature
  6. 16. this system receives and sends signals to the brain
  7. 17. this system gets rid of waste from the body
  8. 18. moves on its own
  9. 19. this organ is a part of the excretory system
  10. 20. this system breaks down food into nutrients
Down
  1. 1. apart of the digestive system
  2. 2. taking oxygen and letting out carbon dioxide
  3. 3. apart of the circulatory system
  4. 4. this system supports and protects organs
  5. 6. this organ is apart of the respiratory system
  6. 8. this system uses blood to transport nutrients/oxygen
  7. 9. this organ is a part of the circulatory system
  8. 10. apart of the intugumentry system
  9. 14. connect muscle to skeleton
  10. 15. this organ is a part of the nervous system