Across
- 4. connects the pharynx to the trachea and contains vocal cords.
- 7. Two main branches off the trachea that lead into the lungs.
- 8. Smallest blood vessels that surround the alveoli for gas exchange.
- 10. Secondary entry point for air, located in the mouth.
Down
- 1. Passage at the back of the throat that connects the mouth and nose to the larynx.
- 2. tube that carries air from the larynx to the bronchi.
- 3. Dome-shaped muscle that contracts and relaxes to help you breathe.
- 5. The hollow space behind the nose where air is warmed, filtered, and moistened.
- 6. Main organs of the respiratory system where gas exchange occurs.
- 9. Smaller tubes that branch off the bronchi and carry air deeper into the lungs.
- 11. Tiny air sacs where oxygen enters the blood and carbon dioxide leaves.