Across
- 2. Something that tells your body what to do
- 4. This muscle moves up and down when we breathe
- 5. An action that we do but we don't think about doing it
- 7. This blood vessel carries blood toward the heart
- 10. We have two of these to help us take in oxygen
- 12. This system helps us breathe
- 14. Breathe out
Down
- 1. This system moves blood through the body
- 3. These blood vessels help oxygen enter the body
- 6. This blood vessel carries blood away from the body
- 7. An action that we choose to do
- 8. This system helps us move and think
- 9. Breathe in
- 11. cord Something in your back that helps send messages to your brain
- 13. Messages from your body to your brain are passed on these