Lung Activity Model – Diaphragm & Breathing Demonstration Apparatus

This lung activity model is a simple, hands-on way to demonstrate how breathing works. It uses two sacs to represent the lungs, a rubber membrane as the diaphragm, and a clear plastic enclosure to model the chest cavity. When students pull the diaphragm down and push it up, they can clearly see how changes in chest volume cause the lungs to fill with air and empty again.

Ideal for classroom demonstrations and student-led investigations, this model makes respiratory mechanics easy to visualise and understand.

Key Features

• Demonstrates breathing mechanics using a diaphragm membrane
• Two sacs represent the lungs for clear visual learning
• Clear enclosure models the chest cavity
• Shows how lung volume changes during inhalation and exhalation
• Simple, durable design suitable for repeated classroom use

Educational Use

• Teaching respiration and the role of the diaphragm
• Biology and health science lessons on breathing and lung function
• Classroom demonstrations and small-group activities
• Student investigations into pressure and airflow

Specifications

• Model type: Lung activity / breathing demonstration model
• Components: Two lung sacs, rubber diaphragm membrane, clear chest cavity enclosure
• Size: 20 × 17 cm (H × D)