Respiratory System

12345678910111213141516171819202122232425262728
Across
  1. 5. infection caused by bacteria, or fungi
  2. 7. passing of air in and out of the lungs
  3. 8. smaller tubular branches of the airways
  4. 12. gas that you breath in
  5. 15. process of letting air out
  6. 16. the act or process of breathing
  7. 17. tiny sacs in the lungs
  8. 19. gas that you breath out
  9. 20. passageways that lead air into the lungs
  10. 21. also called the throat or windpipe
  11. 22. gas goes from high to low concentration
  12. 23. parting of two nostrils
  13. 27. airways narrow and swell
  14. 28. the voice box
Down
  1. 1. cavity behind the nose and above the roof of the mouth
  2. 2. hairlike structures
  3. 3. process of air going into the lungs
  4. 4. two spongy organs that are responsible for respiration
  5. 6. invisible gas that surrounds the earth
  6. 9. the mouth, lips, cheeks
  7. 10. has nostrils and is above the mouth
  8. 11. protective secretion of the mucus
  9. 13. the flap that covers the trachea
  10. 14. breathe in
  11. 15. allows food to enter into the stomach
  12. 18. breathe out
  13. 22. between the neck and the abdomen
  14. 24. opening in the lower part of the human face
  15. 25. dome shaped muscle under the lungs
  16. 26. tube leading air to the bronchi