Across
- 2. The voice box; located at the top of the trachea.
- 4. Muscle that helps expand the chest during breathing.
- 7. Two large tubes branching from the trachea into each lung.
- 8. Essential gas we inhale for survival.
- 9. The windpipe that connects the larynx to the bronchi.
Down
- 1. The throat, connecting the nasal cavity to the trachea.
- 2. Main organs of the respiratory system.
- 3. Smaller branches of the bronchi in the lungs.
- 5. Tiny air sacs where oxygen and carbon dioxide are exchanged.
- 6. Flap that prevents food from entering the airway.