Across
- 7. muscle that bends the arm
- 8. an educated guess in the scientific method
- 10. muscle that extends the arm
- 11. large bone in upper arm
- 12. how many stages of digestion?
- 13. muscle that bends the leg
- 15. bones that protect vital organs in the body
- 16. largest bone in the body
- 17. substance in the stomach that helps with digestion and fighting germs
- 18. white blood cells that destroy germs
- 20. make protein in the cell
- 21. bone that protects the brain
- 22. last stage of digestion
Down
- 1. muscle that extends the leg
- 2. cells that the immune system uses to fight germs
- 3. brain of the cell
- 4. powerhouse of the cell
- 5. muscles found in the chest
- 6. part of the scientific method where you list all items used
- 9. second stage of the immune system
- 14. outer layer of defense of the body
- 19. holds all organelles in place