What does each part of the constructed lung model represents?

In a constructed lung model, the balloon typically represents the lungs, demonstrating how they expand and contract during breathing. The plastic bottle serves as the thoracic cavity, providing a structure that mimics the rib cage. The straw functions as the trachea and bronchi, allowing air to flow in and out of the lung model. Finally, the diaphragm is often represented by a flexible material at the base, illustrating how its movement influences lung capacity and airflow.