Across
- 4. Goes away from the heart with oxygen
- 5. where Arteries and veins exchange
- 7. what we breathe out and plants take in
- 8. what helps us breathe in and out
- 10. what we breathe in and plants "breathe out"
Down
- 1. Guides the blood through the heart
- 2. Contains of the heart,veins,valves,etc.
- 3. Goes towards the heart with carbon dioxide
- 6. main part of the circulatory system
- 9. a liquid inside of the heart