Across
- 5. part of the respiratory system shared with the digestive system (6 letters)
- 6. main muscle involved in breathing (9 letters)
- 8. process of taking air into the lungs (11 letters)
- 9. tiny hair-like structures in the airways that help move mucus (6 lette
- 10. The gas we inhale that is essential for life (6 letters)
Down
- 1. large tubes that branch off from the trachea and lead into each lung (8 letters)
- 2. windpipe that connects the throat to the lungs (7 letters)
- 3. The gas we exhale as a waste product (6 letters)
- 4. Tiny air sacs in the lungs where gas exchange happens (7 letters)
- 7. flap of tissue that covers the windpipe during swallowing (9 letters)