The Respiratory System

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Across
  1. 2. a thin skeletal muscle
  2. 4. what you breath out
  3. 7. air passages inside the lungs
  4. 8. it helps carry air in and out of your lungs
  5. 10. something you smell with
  6. 11. thin blood vessels that connect the arteries and the veins
Down
  1. 1. the movement of a substance from an area of high concentration to an area of lower concentration
  2. 3. move fresh air into your air
  3. 5. what helps you breath
  4. 6. the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in
  5. 7. A large airway that leads from the trachea to the lungs
  6. 9. helps with protection,support,resperation