respiratory system

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Across
  1. 9. the passage for air to go in and out of your mouth and nose
  2. 10. The thing that helps food reach the stomach
  3. 11. the large tube that connects the windpipe to the left and right lung
  4. 13. The thing that produces your voice and helps you swallow
  5. 14. expands while inhaling and shrinks while exhaling
  6. 15. One of the two ways you breath in and out
Down
  1. 1. The thing that carries oxygen rich blood to the heart
  2. 2. brings air to small sacs in the lungs called alveoli
  3. 3. The organ that makes white blood cells
  4. 4. blood vessels that go all over the body
  5. 5. the organ that helps you inhale and exhale
  6. 6. The thing that holds oxygen and releases carbon dioxide
  7. 7. The air filled holes in your head
  8. 8. the thing that distributes air to the respiratory bronchioles
  9. 12. one of the ways you can breath in and out