Across
- 2. Exchanges air
- 4. A lot of cells
- 6. The system containing your lungs
- 7. A lot off tissue cells
- 9. The cells that collect air
- 10. Lets blood flow through the body
- 11. Carries blood to the heart
Down
- 1. How we get the nutrients we need
- 3. The cells that fight off bacteria
- 5. Carries blood away from the heart
- 8. Pumps blood