Lung Demonstration Apparatus
An excellent way to demonstrate the breathing mechanism. This apparatus consists of a bell jar which represents the thoracic cavity, a rubber dam representing the diaphragm, a Y-shaped tube representing the trachea and bronchial tubes, connected to the bronchial tubes are two lung shaped inflatables. On working the rubber dam (diaphragm) the lungs inflate and deflate. Strong, light weight plastic and rubber construction. 7 inch (180mm) tall x 4.5 inch (110mm) dia.
A preview of the included instructions can be found at the bottom of this listing.
Measurements are approximate.