Respiratory System

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Across
  1. 2. this part carries the air to and from the lungs
  2. 4. job is to filter and hold the air
  3. 6. this part prevents food from entering the trachea
Down
  1. 1. this part removes foreign particles from the lungs
  2. 3. site of gas exchange
  3. 5. this parts job is to filter warm and humidify the air