Across
- 4. There is a left and a right one leading to
- 5. The type of blood vessel surrounding alveoli where gas exchange occurs
- 7. Surrounds the lungs to prevent friction
- 9. During this time the growth of the larynx explains the males crackling voice
- 11. Little hair-like structures that line the respiratory tract
- 12. Disease that occurs when the surface area of alveoli decreases
- 13. Exhaling, or breathing out
- 14. Specialized cells that secrete mucus
- 16. Runs posterior to the trachea
- 17. A muscle that helps control breathing
- 19. Small air sacs
- 21. An asthma attack is the result of this structure constricting to prevent air flow
- 25. Inhaling or breathing in
- 27. Also known as the windpipe
Down
- 1. Location of the vocal chords
- 2. Helps to warm and moisten air that is breathed in
- 3. A flap above the larynx that closes when you swallow
- 6. Entrance and exit of air into and out of the lungs
- 8. Drain into the nasal cavity
- 10. The path of air from the nose to the lungs
- 15. An operation to put in an artificial breathing tube
- 18. Passageway into the larynx
- 20. Lymphatic tissue that contains antigens which help fight off pathogens
- 22. Surrounds the trachea so it doesn’t collapse
- 23. Where air and food cross paths
- 24. The left one only has two lobes
- 26. When the bronchi and alveoli fill with fluid