The Respiratory System Crossword

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Across
  1. 3. A flap of tissue that closes over the trachea when you swallow
  2. 5. Two air filled sacks that are on both sides of the chest
  3. 7. The airways that connect the trachea and the lungs
  4. 8. Throat
Down
  1. 1. They are tiny air sacs through which the gas exchange of external respiration takes place
  2. 2. The muscle that seperates the chest from the abdominal cavity
  3. 4. Wind pipe
  4. 5. Voice box
  5. 6. It brings the air into the lungs