You can feel your lungs moving in your chest every time you take a breath, but it might be hard to imagine what they look like and how they actually work. Imagine no longer, as the Plastic Lung Apparatus with Two Balloons provides a visual demonstration of how the lungs work.

Show how the lungs are emptied and filled with air by relaxation and contraction of the diaphragm muscle! Two balloons attached to a Y-tube simulate the lungs as the chest cavity is represented by a half-gallon plastic bell jar with an open top and stout rubber sheet which acts as a diaphragm.

As the diaphragm is pulled downward, the atmospheric pressure is lowered inside the chamber causing the lungs to expand, taking in air. When the diaphragm is released, the lungs deflate.

What You Get

Lung Apparatus Plastic with Two Balloons

21cm x 21cm x 21cm

Lesson Plan