Functional Lung Model

The unique and easy to use model features parts that accurately replicate the human structures’ function during respiration. Pull on the rubber diaphragm covering the bottom of bell jar reduces pressure inside jar, the balloon “lungs” fill with air. Push the diaphragm in, and the balloon collapse recreating exhalation. The set includes an acrylic bell jar, Y tube, two balloons and rubber diaphragm with a knob for easy movement.