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American Educational Products Lung Demonstration Apparatus

Relaxation and contraction illustrated.

Manufacturer: american educational products  1203-3

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Catalog No. S41390

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Description & Specifications


For Use With (Application) Simple model demonstrates the mechanisms of breathing for students
Material Plastic
Type Lung replacement Rubber dam

This simple model demonstrates the mechanisms of breathing for students.

  • Shows how the lungs are emptied and filled with air by the relaxation and contraction of the diaphragm muscle
  • One or two balloons attached to a Y-tube simulate the lungs
  • The chest cavity is a half-gallon bell jar with open top and stout rubber sheet that acts as the diaphragm
  • As the diaphragm is pulled downward, the atmospheric pressure is lowered inside the chamber, causing the lungs to expand and take in air
  • When the diaphragm is released, the lungs deflate