body structure

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Across
  1. 3. basic building blocks of your body
  2. 6. supports the body,protects major organs
  3. 9. protect the ends of our fingers and toes
  4. 12. body's chemical instructions for your entire life
  5. 13. study of the structure of the human body
  6. 15. produces chemicals essential for the survival and digestion
  7. 16. starts to break down food
  8. 17. stores urine
  9. 18. as disease in which cells multiply abnormally
  10. 20. has no known use in humans
Down
  1. 1. microscopically tiny,twisted threads inside every cell
  2. 2. all the body characteristics you inherit from parents
  3. 4. protective covering over the body
  4. 5. enable us to get oxygen from the air we breathe
  5. 7. help control the body's fluid balance
  6. 8. molecule inside every cell that carries all your genes
  7. 10. keeps blood flowing round the body
  8. 11. helps to control sugar levels in the body
  9. 14. body substance made from many of the same type of cell
  10. 17. controls nervous system
  11. 19. produces cells that help fight infections