Lungs and Respiratory System

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Across
  1. 2. The large air passages that lead from the trachea (windpipe) to the lungs.
  2. 4. The part of the throat that is behind the mouth and nasal cavity and above the esophagus and the larynx epiglottis
  3. 5. The windpipe
  4. 7. The singular form of alveoli
  5. 9. The dome-shaped sheet of muscle and tendon that serves as the main muscle of respiration
  6. 13. The first section of the mouth
  7. 14. There are three of this on the right lung and two on the left lung.
  8. 15. The tiny branch of air tubes within the lungs that is a continuation of the bronchus. They connect to the alveoli (air sacs).
  9. 16. Physical matter or material
  10. 17. Are found in the lungs, respiratory tract, have a rhythmic motion to keep the airways clear
  11. 18. The voice box
Down
  1. 1. Breathe in
  2. 3. Smallest blood vessel
  3. 6. Tiny sacs at the ends of the respiratory tree that allow oxygen and carbon dioxide to move between the lungs and bloodstream.
  4. 8. Breathe out
  5. 10. A thin, flexible layer of tissue that covers or separates, cells or parts of an organism.
  6. 11. The singular form of bronchi
  7. 12. A large air filled space above and behind the nose in the middle of the face
  8. 18. The primary organs of the respiratory system