Across
- 6. Thin, mesh-like tubes
- 8. The pipe that allows you to inhale and exhale
Down
- 1. The two tubes that go into each lung
- 2. The biggest organs in our body
- 3. It causes hiccups
- 4. Little sacks that make your lungs expand
- 5. The 30,000 teeny, tiny tubes in each lung
- 7. Tiny hairs that stop dirt and mucus getting into our lungs