Respiratory System

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