Respiratory System

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Across
  1. 1. The muscle responsible for breathing
  2. 4. Infection of the lungs
  3. 9. Gas removed from the body
  4. 10. Movement of air in and out of lungs
Down
  1. 2. A condition most common in children that causes difficulty breathing
  2. 3. Gas taken into the body
  3. 5. Tiny air sacs in the lungs
  4. 6. How many lobes of the lungs
  5. 7. Difficulty breathing
  6. 8. Tube that carries air to lungs
  7. 10. Branches of the trachea