Respiratory System

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Across
  1. 2. A tube that connects the nasal and oral cavity
  2. 4. A tube that leads from the trachea to the lungs
  3. 5. It has many air sacs that allow gases to be exchanged
  4. 6. Air sacs in lungs that diffuse air into the bloodstream
  5. 7. Warms up air as it passes through
  6. 9. fluid which covers the walls of airways and catches particles
  7. 12. Process of taking in oxygen and releasing carbon dioxide
  8. 13. Increased volume of lungs and decreased pressure
  9. 14. Large thin muscle responsible for breathing
  10. 16. The rings that keep the trachea open is made out of this
  11. 17. Decreased volume of lungs and increased pressure
Down
  1. 1. Smaller airways that lead to Alveoli
  2. 3. Hollow tubes that transport blood throughout the body
  3. 7. Acts as a filter in the nostril
  4. 8. Movement of air going in and out lungs
  5. 10. Covers the top of the trachea
  6. 11. Tiny hairs that line the respiratory tract and catch debris
  7. 15. A tube that leads to the bronchi