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Direct determination of lung volume from a spirogram

Direct determination of lung volume from a spirogram

Item no.: P8001160
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The lung is the organ which plays a decisive role in the exchange of gases with the surroundings. The membrane with which the lung is lined releases CO2 from the blood in which it is dissolved and passes O2 into the blood. To breathe in, the diaphragm must contract to effect a stretching of the lungs, i.e. diaphragm contraction causes the volume of the lung to increase. Air is hereby drawn into the lungs from the surroundings. The subsequent relaxation of the diaphragm causes the lung to contract back so that air is passively breathed out. This cycle ensures the repeated breathing in of oxygen and breathing out of carbon dioxide. But how many litres of air can we breathe in and breathe out in one breath?


  • Uses the same spirometer design which is also used in medical diagnostics
  • One-way turbine system avoids infections
  • All methods used in medical diagnostics can be performed
  • Takes advantage of modern wireless data acquisition technology


  • Determine the vital capacity in litres using a spirometer
  • Create a spirogram from the recorded measured values

What you can learn about

  • Spirogram
  • Vital lung capacity
Document     Filesize
p8001160e.pdf Experiment guide, English 1.57 MB

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