Quick Answer:The Lung Demonstration Model shows how breathing works: two sacs act as lungs inside a clear plastic chest cavity with a rubber diaphragm, and the model is 30 cm high and 14.5 cm wide.
Last updated: 18 October 2026
Key Features
Two sacs represent the lungs.
A rubber membrane serves as the diaphragm.
A clear plastic enclosure models the chest cavity.
Shows how the lungs empty and fill as the diaphragm relaxes and contracts.
Technical Specifications
Specification
Value
Lungs
Two sacs
Diaphragm
Rubber membrane
Chest cavity
Clear plastic enclosure
Height
30 cm
Width
14.5 cm
How It Is Used
Pulling the rubber diaphragm down makes the sacs fill with air, and letting it go back makes them empty, so students can see directly how movement of the diaphragm changes the space in the chest and drives breathing.
Frequently Asked Questions
How does the Lung Demonstration Model work?
When the rubber diaphragm is made to contract and relax, the two sacs representing the lungs fill with and empty of air inside the clear chest cavity.
Laboratories and education suppliers in Afghanistan, Mauritius, Bahrain, Guinea-Bissau, Lithuania and Malaysia can source the Lung Demonstration Model from JLab India for export.
For a quotation on the Lung Demonstration Model, contact JLab India on +91-8569909696.
