respiratory system

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Across
  1. 4. a large dome shaped muscle below the lungs that expands and compresses the lungs, enabling breathing
  2. 6. you can use it to both breath and eat
  3. 7. a flap of tissue in the back of your mouth that keeps food out of your trachea
Down
  1. 1. two passage ways that branch from the trachea, one for each lung
  2. 2. two large organs that exchange oxygen and carbon dioxide.
  3. 3. a passage way in your throat that takes air and brings it out of your lungs
  4. 5. a part of your body that has two nostrils that you can use to breath through