Lung Demonstration Model

Lung Function Demonstration Model, commonly used in educational settings to illustrate the mechanics of breathing. 

Components: It features a clear bell jar representing the chest cavity, with rubber balloons acting as lungs and a rubber membrane on the bottom functioning as the diaphragm.

Function: Pulling or pushing the rubber membrane simulates the diaphragm's contraction and relaxation, causing the balloons to inflate and deflate respectively. 

Purpose: It provides a hands-on visual for understanding air exchange simulation and the relationship between muscle function and air flow.