Across
- 2. A part that Deflates the lungs
- 4. A waste that you breath out
- 7. The air passages inside the lung
- 8. Pipe that sends air to lungs
- 10. Fist part of the System
- 11. Blood vessels connects arteries and veins
Down
- 1. Process of Gasses(high/low)
- 3. organ that collects air
- 5. Gas organisms inhale to keep alive
- 6. Exchange Oxigen and CD into blood
- 7. splits air into the lungs
- 9. Curved bones pairs to the spines