Across
- 4. your windpipe, carries air to the lungs
- 6. muscle below lungs that expands and contracts as your breathe
- 7. two tubes that branch off from the trachea
- 8. your voice box - where your vocal cords are
- 10. flap that covers larynx and trachea when you swallow
Down
- 1. tiny branches of tubes that carry air deep into the lungs
- 2. tiny blood vessels that surround alveoli
- 3. your throat - at the base of the nasal cavity
- 5. tiny hairs that trap dust and pollen
- 9. tiny air sacs at the end of the bronchioles, where exchange of oxygen and carbon dioxide takes place