respiratory system

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Across
  1. 2. a wide muscle that separates the chest cavity from the abdominal cavity and aids in the inflation of the lungs
  2. 6. the system of the body that brings oxygen into the body and releases carbon dioxide
  3. 9. to get rid of waste in the body.
Down
  1. 1. tiny air sacs in the lungs that are the site of gas exchange between the lungs and blood
  2. 3. tube at the back of the mouth that leads to either the respiratory or digestive systems; also called the throat.
  3. 4. large airways that lead to the lungs
  4. 5. the tubes that connect the trachea to each lung.
  5. 7. organs of the respiratory system that bring oxygen-rich air into the body and send oxygen-poor air out of the body
  6. 8. Organ that filters waste from the body, and produces urine.
  7. 10. a tube above the trachea; that contains the structures used for speech; also called the voice box.