Large and small cycle electric models

The large and small circulation electric model is an intuitive demonstration device used for teaching the principles of blood circulation in the cardiovascular system. It simulates the rhythm of the heart's pulsation through electric drive, clearly presenting the direction, speed and circulation routes of arterial and venous blood flow. Models typically include structures such as the heart, arteries, and veins, and distinguish between arterial oxygenated blood and venous deoxygenated blood through transparent tubes and colored liquids, helping learners understand the differences in blood flow in the systemic and pulmonary circulation.

In teaching, the model can dynamically demonstrate the entire process of ventricular contractions pushing blood into the aorta, passing through the body's tissues and then returning to the atria, and finally completing gas exchange through the pulmonary circulation, making the abstract physiological mechanism visual. Electric drive ensures continuous and stable circulation, facilitating teachers to repeatedly demonstrate, pause explanations or compare different sections. This model is applicable to medical colleges and universities, physiology courses, health science popularization and experimental teaching, enabling students to more accurately master the pumping function of the heart and the dual circulation rules, and improving comprehension efficiency and classroom interactivity.