Respiratory System

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Across
  1. 6. Respiration involves inhalation & __________.
  2. 8. The respiratory system is divided into the _____ respiratory tract and the lower respiratory tract.
  3. 9. The right lung has _____ lobes.
  4. 10. Breathing In
  5. 12. During inhalation the epiglottis lifts up so that air passes over the larynx and into the _______
  6. 13. The bronchus enters the lung and further divides into small branches called ___________.
  7. 17. Look like small clusters of grapes.
  8. 20. Eventually, the bronchioles and end in tiny air sacs with a single cell layer.
Down
  1. 1. Lungs are separated from the abdominal cavity by a muscle called the _________.
  2. 2. Breathing out
  3. 3. ___________ brings oxygen into the lungs and eliminates Co2
  4. 4. Another name for trachea.
  5. 5. Every Cell Needs This To Survive
  6. 7. The epiglottis prevents _________ from entering the airway during swallowing.
  7. 9. Another name for the pharynx.
  8. 11. Air enters the nose and passes into the ______.
  9. 14. Alveoli are surrounded by theses.
  10. 15. A piece of cartilage acts like a lid over the larynx.
  11. 16. Each lung is covered by a two-layered sac called.
  12. 18. The voice box.
  13. 19. These are spongy tissues filled with alveoli, blood vessels, and nerves.