Respiratory System

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Across
  1. 1. Mass of air sacs
  2. 6. Increases volume of chest cavity
  3. 7. Important for singers
  4. 9. Process of breathing air in
Down
  1. 2. Pair that hang in pleural cavities
  2. 3. Small flap of cartilage, back of the tongue
  3. 4. Occurs as pressure in lungs increases
  4. 5. Branch off the trachea and carry air
  5. 8. Funnel shape, connects nasal cavity to foodpipe