Across
- 4. controlled by nervous system
- 6. breathes in and out
- 11. carries oxygen nutrients and hormones
- 12. the nerves
- 14. Moves air through our body
- 16. have horizontal fibers in a microscope
- 17. Made up of the central and peripheral
- 18. protects brain and forms our head shape
- 20. what protein is in bones
- 24. the main part of the circulatory system
- 25. carries blood back to the heart
Down
- 1. help hold the skeleton together
- 2. The messager in the body
- 3. carries blood away from heart
- 5. pull joints allowing for us to move
- 7. brain and spinal
- 8. controls the body
- 9. found in the heart
- 10. carries oxygen to the cells
- 13. protects the lungs and heart
- 15. chest cavity
- 19. hold our weight
- 21. the voice box
- 22. where the air enters
- 23. has nerves branching out and is 18 inches long