Respiratory System

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Across
  1. 4. when a liquids temperature rises, gas solubility ____
  2. 6. type ___ alveolar cells secrete surfactant
  3. 7. traps inspired dust, bacteria, and other debris
  4. 10. cells that secrete mucins
  5. 11. some of the inspired air fills the conducting respiratory passageways and never contributes to gas exchange in the alveoli
  6. 13. volume during normal quiet breathing
  7. 14. the relative amount of smooth muscle ____ as the passageways become smaller
  8. 17. thin walled air sacs, the site of gas exchange
  9. 18. respiratory centers are in the ___ ___
  10. 19. pressure in the alveoli
  11. 21. which lung has 3 lobes
  12. 24. lighten the skull, help warm and moisten air
  13. 26. blood transports CO2 from the tissue cells into the lungs mainly by
  14. 28. ____ pleura covers the external lung surface
  15. 29. the blood flow in pulmonary capillaries
  16. 30. windpipe, c-shaped rings of hyaline cartilage
  17. 31. the point where the trachea branches into the two main bronchi
  18. 33. the most potent chemical influencing respiration
  19. 34. ____ pleura covers the thoracic wall
  20. 35. the difference between the intrapulmonary and the intrapleural pressures
Down
  1. 1. alveoli would collapse during expiration if not for _____
  2. 2. main way that oxygen is carried in blood
  3. 3. antibacterial enzyme
  4. 5. the total amount of exchangeable air
  5. 8. create a gentle current that moves the sheet of contaminated mucus posteriorly toward the throat
  6. 9. respiratory pressures are always described relative to ____ pressure
  7. 12. temporary cessation of breathing during sleep
  8. 15. guardian of the airways
  9. 16. the greater the ___ ___ of the respiratory membrane, the more gas can diffuse across it in a given time period
  10. 20. during ____ respiration oxygen enter and carbon dioxide leaves the blood in the lungs by diffusion
  11. 22. _____ zone where all of the respiratory passageways from the nose to the respiratory bronchioles
  12. 23. leading cause of cancer death for both men and women in North America
  13. 25. the period when air flows into the lungs
  14. 27. _____ zone is the actual site of gas exchange
  15. 28. the amount of gas reaching the alveoli
  16. 32. 80% of patients smoked, progressive dyspnea, cough, infections