Across
- 3. Where gas exchange happen in your body
- 6. necessary to stay alive
- 10. Thing that you eat
- 11. food is broken down in this
- 12. breathing in
- 13. breathing out
- 14. Muscle in upper leg
- 16. protect your chest
- 17. muscle help you do this
- 19. you breath it in
Down
- 1. what the skeletal system is made up of
- 2. be function of the skeletal system
- 4. tiny microbes that help with digestion
- 5. where nutrients are absorbs
- 7. thing that help you to move
- 8. muscle in your upper arm
- 9. the body system focus on getting nutrients from food
- 10. The longest bone in your body
- 15. all of your bones
- 18. if you have big muscle you are ...