Respiratory System

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Across
  1. 2. hairlike structures that help move the mucous layer that lines the airways pushing trapped particles toward the esophagus
  2. 4. facial structure through which air enters
  3. 6. process in which cells use oxygen and nutrients to produce energy, water, and carbon dioxide
  4. 7. the process of breathing
  5. 8. voice box
  6. 9. the exchange of oxygen and carbon dioxide between the lungs and bloodstream
  7. 11. the system in the body that is responsible for taking in oxygen and removing carbon dioxide
  8. 14. (windpipe) a tube extending from the larynx to the center of the chest
  9. 15. the process of breathing in air
  10. 17. smaller bronchi
  11. 19. cavities in the skull that surround the nasal area
Down
  1. 1. a special leaflike piece of cartilage, closes the opening of the larynx during swallowing
  2. 3. the exchange of carbon dioxide and oxygen between the tissue cells and the bloodstream
  3. 5. the place where the air from the trachea is carried to the lungs
  4. 10. throat
  5. 12. process in which the diaphragm contract and enlarge so that air can make its way into the alveoli, where the exchange of gases takes place
  6. 13. the diaphragm and intercostal muscles relax and air is forced out of the lungs and air passages
  7. 16. tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place
  8. 18. organs in the chest that allows the body to take in oxygen
  9. 20. Cavities two hollow spaces in the nose