The Respiratory System Crossword

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Across
  1. 3. They are tiny air filled sacs through which the gas exchange of external respiration takes place
  2. 5. Two air filled sacks that are on both sides of the chet
  3. 6. A contagious bacterial infection that usually affects the lungs
  4. 9. The airways that connect the trachea and the lungs
  5. 11. The muscle that separates the chest from the abdominal cavity
  6. 12. Wind pipe
  7. 13. An inflammation of the lungs commonly caused by a bacterial or viral infection
Down
  1. 1. It brings the air into the lungs
  2. 2. An inflammatory condition in which the trachea, bronchi and bronchioles become narrowed, causing difficulty in breathing
  3. 4. A flap of tissue that closes over the trachea when you swallow
  4. 7. An inflammation of the bronchi caused by infection or exposure to irritants such as tobacco smoke and air pollution
  5. 8. Voice box
  6. 10. A disease that progressively destroys the walls of the alveoli