4-Piece Vein Model with Blood Clot

The first section of this model shows a vein cross-section with its valves open. Here blood is able to pass through the valves to continue on its way back to the heart. The second section of this model shows a vein cross-section with its valves closed. Here blood is prevented from passing through the valve in the incorrect direction. The third section of this model shows a vein cross-section with its valves open and the start of blood pooling on the valves. The fourth section of this model shows a vein cross-section with its valves open and a severe blood clot. This product contains a set of models and an informational card. Each model measures 4.25″x1.25″x1.875″. The full size of the card measures 6.5″x5.25”. All stages rotate on a hinge pin. Our model is great for doctor's offices and healthcare facilities.