The Respiratory System

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Across
  1. 3. lipid and protein complex that helps reduce surface tension of alveolar fluid. prevents alveolar collapse. produced by type II alveolar cells
  2. 5. which capacity: residual volume + expiratory reserve volume (2 words)
  3. 8. which volume: amount of air you can inhale beyond tidal volume (2 words)
  4. 9. what kind of pressure is exerted by air surrounding body?
  5. 12. what kind of pressure is the pressure in the pleural cavity that fluctuates while breathing, and is always a negative pressure?
  6. 13. what kind of pressure is the pressure in alveoli, that always eventually equalizes with atmospheric pressure?
  7. 15. which volume: amount of air you can exhale with one breath (2 words)
  8. 17. active process, mediated by diaphragm and external intercostals
  9. 18. which capacity: total amount of air in lungs. inspiratory reserve volume + tidal volume + expiratory reserve volume + residual volume (2 words)
  10. 19. attraction of liquid molecules to one another at gas-liquid interface. tends to draw liquid molecules closer together, and causes alveoli to shrink to smallest size (2 words)
  11. 20. brings air into respiratory tract, cleanses, humidifies, and warms air. includes nose, pharynx, larynx, trachea, most bronchioles (2 words)
  12. 22. passive process, inspiratory muscles relax, thoracic cavity volume decreases and lungs recoil (2 words)
  13. 25. which capacity: tidal volume + inspiratory reserve volume
Down
  1. 1. what kind of pressure is the difference between intrapulmonary pressure and intrapleural pressure, and keeps the lungs from collapsing??
  2. 2. measure of how much stretch the lungs have (2 words)
  3. 4. gas flow changes _________ with resistance
  4. 6. which lung has 3 lobes?
  5. 7. active process, mediated by oblique and transverse abdominal muscles, as well as internal intercostal muscles (2 words)
  6. 10. passageway for food and air from level of soft palate to epiglottis
  7. 11. which capacity: maximum amount of air you can inhale or exhale. inspiratory reserve volume + tidal volume + expiratory reserve volume
  8. 14. site of gas exchange. includes respiratory bronchioles, alveoli (2 words)
  9. 16. which volume: amount of air you bring in/out with every breath
  10. 21. what kind of respiration: gas exchange between lungs and blood?
  11. 23. which volume: amount of air in lungs that must be present to keep them open
  12. 24. the site for entry/exit of blood vessels, bronchi, lymphatic vessels, and nerves