Respiratory system

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Across
  1. 2. Primary muscle in ventilation
  2. 4. Sacs used for gas exchange
  3. 6. Cell structures that help move mucus
  4. 9. The _________ artery feeds the conducting airways
  5. 10. A phospholipid that prevents the alveoli from sticking together
  6. 15. Bone structures in the nasal cavity lined with mucous membranes
  7. 17. Volume of air always in the lungs
  8. 18. Patches of immune tissue in the pharynx
  9. 20. The pulmonary ______ carries deoxygenated blood from the heart
  10. 23. The rings of the trachea are made of ________ cartilage
Down
  1. 1. Contains the VRG
  2. 3. Opening to the trachea
  3. 5. Small canals in the nasal cavity
  4. 7. _______ cells produce mucus
  5. 8. Resting breathing volume
  6. 11. Decreases lung compliance
  7. 12. Part of the airway that allows food and air to pass through
  8. 13. ________ Law states that pressure and volume are inversely related
  9. 14. The pulmonary ______ carries oxygenated blood to the heart
  10. 16. Stretchability of the lung
  11. 18. Rigid structure leading to the lungs
  12. 19. Connective tissue that surrounds the lungs
  13. 21. Contains the PRG
  14. 22. Number of lobes in the right lung