The Respiratory System

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Across
  1. 4. :where the lungs and the blood exchange oxygen and carbon dioxide
  2. 5. : Protects your lungs and other organs
  3. 7. : where the air that comes from our mouth or nose, reaches your lungs
  4. 9. :conducts air into the lungs
  5. 10. a part of your face used for breathing
  6. 11. : Something we breathe in and need to survive
  7. 12. Something that moves when you inhale and exhale
Down
  1. 1. : Carries blood away from the heart
  2. 2. : The organ that helps us breathe
  3. 3. : is the movement of molecules from a region of higher concentration to a region of lower concentration
  4. 6. Another name for it is a windpipe
  5. 8. dioxide : The air we exhale