Unit 3: Respiratory System

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Oddishii
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272464
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Unit 3: Respiratory System
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2014-05-06 00:30:23
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sbi3ue mr rick biology respiratory system grade 11
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  1. Main function of the respiratory system?
    Oxygen enters every cell; carbon dioxide leaves every cell (gas exchange)
  2. What are the two basic requirements of the respiratory system?
    • Surface area big enough to occur at a rate that will meet organisms metabolic needs
    • Moist environment so O2 and CO2 can be dissolves
  3. Define breathing
    ventilating a respiratory surface with air (divided into inspiration and expiration)
  4. ventilating a respiratory surface with air (divided into inspiration and expiration)
    breathing
  5. exchange of O2 and CO2 between air and blood
    external respiration
  6. Define external respiration
    exchange of O2 and CO2 between air and blood
  7. Define internal respiration
    exchange of O2 and CO2 between blood and cells of surrounding tissue
  8. exchange of O2 and CO2 between blood and cells of surrounding tissue
    Internal respiration
  9. Define cellular respiration
    chemical reactions in mitochrondria
  10. chemical reactions in mitochrondria
    cellular respiration
  11. What respiratory traits do all mammals have?
    Lung arrangement
  12. pathway of air: upper respiratory tract
    • nasal passages filter, warms, and moistens
    • pharynx divides to larynx and trachea
  13. four parts in upper respiratory tract
    nasal passages, pharync, larynx, trachea
  14. pathway of air: lower respiratory tract
    • bronchi
    • alveoli
  15. how many lobes does the right lung have
    3
  16. how many lobes does the left lung have
    2
  17. why are alveoli perfect structures for gas exchange
    • thin
    • moist
    • huge surface area
  18. path of oxygen in gas exchange
    • alveoli to blood through external respiration
    • blood to cells through internal respiration
  19. path of carbon dioxide in gas exchange
    • cells to blood through internal respiration
    • blood to alveoli through external respiration
  20. what are intercostal muscles
    associated with ribcage
  21. what is the diaphragm
    separates chest cavity from abdominal cavity
  22. what happens during inhalation
    • intercoastal muscles contract
    • ribcage lifts up 
    • diaphragm contracts to plate
    • volume in chest cavity increases
    • lungs expand 
    • low air pressure
  23. intercoastal muscles contractribcage lifts up diaphragm contracts to platevolume in chest cavity increaseslungs expand low air pressure
    inhalation
  24. what happens during exhalation
    • intercoastal muscles relax
    • ribcage lowers
    • diaphragam relaxes
    • volume in chest cavity decreases
    • lungs shrink
    • high air pressure
  25. air pressures from ___ pressure to ___ pressure
    high to low
  26. tidal volume
    normal breath
  27. inspiratory reserve volume
    additional air inhaled beyond normal tidal inhalation
  28. expiratory reserve volume
    additional air exhaled beyond normal tidal inhalation
  29. vital capacity
    maximum amount of air passing thru lungs at one time (tidal volume + inspirksjflsaj + expiegsdaj)
  30. residual volume
    air remaining in lungs after max exhalation; min amoutn in lungs
  31. two things humans do to adapt to high elevation
    • breathe more
    • red blood cells produced

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