A first-hand view of how the lungs work. This simple, yet effective apparatus consists of two sacs which represent the lungs, a rubber membrane which serves as the diaphragm and a clear plastic enclosure which models the chest cavity. By making the diaphragm relax and contract the students can see how the lungs are emptied and filled with air.
- Made of high quality rubber and plastic
- Simplicity of model allows demonstration to multi ages.
- Simply pull onto the bottom rubber section to simulate the diaphragm relaxing and contracting and show how the lungs are emptied and filled with air with each breath
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