Across
- 2. sac of air
- 4. the entrance to the bronchus
- 7. little pipes that are in your lungs
- 9. organ in the respiratory system
- 10. the big oval on your face
Down
- 1. muscle muscle inbetween the ribs
- 3. organ that moves up and down
- 5. multiple ribs make this up
- 6. big tube in your throat
- 8. one of the entrances for oxygen to enter the body