Across
- 3. system that transports oxygen and sugar to the body
- 6. bone that protects your brain
- 9. where breathing begins
- 11. muscle that helps you breath
- 13. connect bone to bone
- 14. your skeleton is made up of 206 of these
Down
- 1. inhale and exhale
- 2. making energy in the cells
- 4. system that takes in oxygen and removes carbon dioxide
- 5. system that moves the bones
- 6. muscle that is inside your organs
- 7. system that supports and protects the body
- 8. connect muscle to bone
- 10. type of muscle that makes up the heart
- 12. where blood cells are made