Lung Demonstration Model – Interactive Breathing Apparatus (Suitable for KS3+)

This simple yet highly effective Lung Demonstration Model provides students with a clear, hands‑on understanding of how the respiratory system works. Designed for KS3 and above, the apparatus allows learners to see how lungs expand and contract during breathing by mimicking the action of the diaphragm inside the chest cavity.

The model consists of two flexible sacs that represent the lungs, a rubber diaphragm that simulates the muscular action controlling breathing, and a clear plastic enclosure representing the ribcage and thoracic cavity. When the diaphragm is pushed or pulled, students can observe air entering and leaving the lung sacs, demonstrating inhalation and exhalation in a memorable and visual way.

With a compact yet impactful design measuring approximately 16.5cm (D) × 33cm (H), this model is ideal for classroom demonstrations, revision activities, and group exploration.

Important Care Information

The balloons and diaphragm of this model are made from natural rubber, which will naturally degrade over time. To prolong their life:

• Store the apparatus in a cool, dry, dark environment
• Keep rubber parts away from heat and light
• Apply a small amount of talcum powder to slow deterioration

Rubber components are considered consumables and will eventually require replacement. Spare parts are available:

• 80062 – Spare Balloon Set Only
• 80744 – Spare Diaphragm Only

Key Features

• Demonstrates inhalation and exhalation using a working diaphragm model
• Two sacs represent the lungs
• Rubber membrane acts as the diaphragm
• Clear plastic enclosure models the chest cavity
• Excellent for whole‑class demonstrations
• Durable and simple to operate
• Size: 16.5cm (D) × 33cm (H) approx.

Ideal for School Science Lessons

Perfect for KS3 and GCSE biology, this lung model enhances understanding of the respiratory system through interactive, visual learning. It is ideal for teaching:

• How the diaphragm controls breathing
• The movement of air into and out of the lungs
• The structure and function of the thoracic cavity
• The differences between inhalation and exhalation
• SEN‑friendly demonstrations that build conceptual understanding

Engaging, easy to use, and perfect for demonstrating core biological principles, this Lung Demonstration Model is a must‑have teaching aid for any school science department.