Respiratory System

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Across
  1. 2. The upper part of the trachea
  2. 3. also called “the windpipe”
  3. 6. Flap that prevents food from entering trachea.
  4. 7. curved bones that protect the heart and lungs
  5. 9. the tiny air sacs of the lungs
Down
  1. 1. a muscle separating the thorax from the abdomen
  2. 4. condition that causes difficulty breathing
  3. 5. air passages that lead from the trachea to lungs
  4. 6. connects the throat to the stomach
  5. 8. lung inflammation caused by infection