RESPIRATORY SYSTEM

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Across
  1. 4. This prevents food and water from entering the lungs
  2. 6. The number of different Bronchi there are
  3. 8. Tube with rings of cartilage
  4. 9. Scientific word for voice box
  5. 10. Helps to warm and humidify the air we breath in
Down
  1. 1. A little indentation in the lungs for the heart
  2. 2. Muscle that helps you breath
  3. 3. This is removed from air thanks to cilia and mucus
  4. 5. Your lungs look like this upside down
  5. 7. The singular version of the word Bronchi