Across
- 5. Main branches off of the trachea into each lung.
- 6. The passage for air in the nose.
- 11. The passage for air in the mouth.
Down
- 1. Tiny sacs where gas exchange occurs.
- 2. The right organ has 3 lobes, and the left organ has 2 lobes.
- 3. The passageway between oral and nasal cavities.
- 4. Smaller branches off of the bronchi.
- 7. The "voice box", contains the vocal chords.
- 8. Flap of tissue that closes during swallowing.
- 9. Also known as the windpipe.
- 10. Tiny vessels that allow for gas exchange at the alveoli.