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American Educational Products Lung Demonstration Apparatus

Relaxation and contraction illustrated.

Manufacturer: american educational products  12031

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Catalog No. S41448

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Description & Specifications


For Use With (Application) Emptied and filled with air by relaxation and contraction of the diaphragm muscle
Height (English) 8 in.
Height (Metric) 20.32cm
Material Plastic
Type Lung demonstration apparatus

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