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