Lung Function Demonstration Model

This lung function demonstration model provides a firsthand view of how the lungs work. The apparatus consists of two sacs representing the lungs, a rubber membrane serving as the diaphragm, and a clear plastic enclosure modeling the chest cavity. Pulling the bottom rubber section simulates diaphragm contraction, showing how the lungs fill and empty with each breath. The model is made from durable rubber and plastic designed for repeated use. Its simplicity makes it effective across multiple age levels, from elementary students visualizing breathing to university-level instruction on respiratory mechanics and pulmonary function.