Across
- 2. Used to control breathing
- 4. Gas exhaled from the lungs.
- 7. very small tubes connected to the bronchi
- 8. that carries air from the throat to the lungs
- 10. the part of the face that above the mouth
- 11. small tube that carries blood
Down
- 1. Allowing substances to move into and out of cells
- 3. organs in the that you use for breathing
- 5. Gas essential for survival
- 6. One of the many small spaces in each lung
- 7. It forms the branches of the organ through which air passes
- 9. curved bone