The Respiratory System

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Across
  1. 2. The area at the top of the trachea, which contains the larynx(voicebox).
  2. 4. What is made of muscle and elastic fibres with rings of cartilage?
  3. 7. What is carbon dioxide and water carried out from the blood in?
  4. 9. Below the epiglottis is the ___________.
  5. 10. The lungs surrounded by the ________.
Down
  1. 1. What closes off the trachea when we swallow?
  2. 3. The lungs are located in the _______.
  3. 5. An example of a breathing disorder caused by an allergic reaction to materials in the environment such as pollen, cigarette smoke, house dust and pet dander.
  4. 6. These tubes are lined with mucous-secreting cells and tiny hairs called _____.
  5. 8. The spongy structure where the exchange of gases takes place.