Across
- 2. send signals to other cells
- 10. permits movement of the body
- 12. send direct messages to the brain
- 15. we lose water by
- 16. protects vital organs
- 17. a system of bones in our body
- 18. a network of organs and tissues
- 20. longest bone in the human body
Down
- 1. the muscles attached to the bone
- 3. the body’s electrical wiring
- 4. only organs that can float
- 5. a part of the circulatory system
- 6. a part of the circulatory system
- 7. help the knee bend
- 8. also know as the cardiovascular system
- 9. a network of nerve cells and fibers
- 11. The movement of blood through the body
- 13. move fresh air through you body
- 14. stables the shoulder
- 19. weakest bone in the human body