Respiratory system

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Across
  1. 1. Routes air coming in your nose and mouth down to your voice box
  2. 7. major organ, carry air to and from your lungs splits into 2
  3. 10. major organ, carry air to and from your lungs, splits into many tubes
  4. 11. In the alveoli, where CO2 and O2 move
  5. 12. major organ, contracts and flattens and the chest cavity
Down
  1. 2. major organ, expand during inhalation, taking in oxygen, and shrink during exhalation, expelling carbon dioxide
  2. 3. major organ,where you breathe in the air
  3. 4. Takes in O2, Lets out CO2
  4. 5. Blood vessel, bring nutrients and oxygen to cells in your organs and body systems
  5. 6. major organ, lets air travel from nose cavity to lungs
  6. 8. contains the vocal cords and functions as a voice box for producing sounds
  7. 9. major organ, brings oxyegn to body