Respiratory System

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Across
  1. 3. Contains vocal cords, also known as the voice box.
  2. 9. 9 layers build this structure, aids in breathing.
  3. 10. Refers to the space in the mouth.
  4. 11. There are over 480 million of these in your lungs.
  5. 13. A hollow space in the frontal bone, assists with warmth and moisture.
  6. 14. A small flap that controls where air/food go (trachea or esophagus).
  7. 15. A collection of alveoli, covered in capillaries.
  8. 16. Refers to the space in the nose.
  9. 18. Main organ responsible for respiration, primarily inhalation
  10. 19. A hollow space that helps lighten the weight of the skull.
Down
  1. 1. Leads from the larynx to your bronchi, also called your windpipe.
  2. 2. Connects the trachea to your lungs.
  3. 4. First to provide filtration, warmth and moisture to air inhaled through the nose.
  4. 5. AKA "branches of the tree", connects bronchi to alveolar ducts.
  5. 6. Has 3 sections connecting the nose and mouth to the esophagus.
  6. 7. A long tube used in digestion, usually behind the trachea.
  7. 8. AKA "Broccoli stems", connects bronchioles to alveolar sacs.
  8. 12. The muscle between your ribs, primarily responsible for exhalation .
  9. 17. Where the trachea divides into the left and right bronchi.