The Respiratory System

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Across
  1. 3. The trachea divides into two tubes, one entering the left and one entering the right lung.
  2. 4. Here the throat divides into the trachea (wind pipe) and esophagus (food pipe).
  3. 5. Multiple branching from the bronchi.
  4. 7. This is also known as the voice box as it is where sound is generated.
  5. 8. Have very thin walls which permit the exchange of oxygen and carbon dioxide.
Down
  1. 1. Is a broad band of muscle which sits underneath the lungs.
  2. 2. Also known as the windpipe this is the tube which carries air from the throat into the lungs.
  3. 6. The function of this part of the system is to warm, filter and moisten the incoming air