Human Heart, Pumping

Quick Answer: The pumping heart model is a working model of the human heart used to demonstrate its action as a pump, rather than only its anatomy. It helps students see how contraction and one-way valves move blood out of the heart and into the arteries.

Demonstrating the Heart as a Pump

Static models teach names; a pumping heart model teaches function. Working heart models are commonly driven by a hand-squeezed bulb or a small pump that pushes coloured liquid, or air, through the chambers and vessels, showing flow leaving the heart with each squeeze. The mechanism of this particular model, whether it uses liquid and what drives it are not stated in the title and should be confirmed before ordering.

The demonstration supports the key ideas of the cardiac cycle. During systole the ventricles contract and pressure rises until the semilunar valves are forced open and blood is ejected; during diastole the ventricles relax, those valves snap shut and the chambers refill from the atria. Without valves the heart would push blood backwards as much as forwards, and a working model makes that one-way principle visible.

It also links to measurements students can make on themselves. Each ejection sends a pressure wave along the arteries that is felt as the pulse, and the volume ejected per beat, the stroke volume, multiplied by the heart rate gives the cardiac output. Timing the model’s action alongside students’ own pulse rates makes these terms concrete.

Specifications

Applications

• Demonstrating systole and diastole in the cardiac cycle
• Showing why valves are needed for one-way blood flow
• Introducing pulse, heart rate and cardiac output before students measure their own
• Exercise physiology lessons on how heart rate and stroke volume rise with activity

Care & Handling

• If the pumping heart model uses liquid, empty and rinse it after each use and let it dry, to prevent mould in tubes and chambers.
• Operate the pump gently; forcing it can split tubing or loosen joints.
• Inspect flexible parts regularly and keep the model out of the sun, which hardens rubber and plastic tubing.

Why Choose LabEquip

Physiology teachers and nursing tutors buy a pumping heart when they want to show the heart working, not just its parts. LabEquip lists it with its biology lab products, and the static 2 part heart covers internal anatomy alongside it. Ask through the contact page how this model is operated.

Frequently Asked Questions

How does a pumping heart model work?

Working heart models usually use a hand bulb or small pump to push fluid or air through the chambers and vessels, imitating contraction. LabEquip can tell you which mechanism this model uses before you order.

What happens during systole and diastole?

In systole the ventricles contract and eject blood into the aorta and pulmonary trunk. In diastole they relax and refill, while the semilunar valves stay closed to stop backflow.

Why can we feel a pulse?

Each time the left ventricle ejects blood, a pressure wave travels along the arteries. Where an artery lies near the skin over bone, such as at the wrist, this wave is felt as the pulse.

What is cardiac output?

It is the volume of blood the heart pumps per minute, equal to stroke volume multiplied by heart rate. It rises sharply during exercise.

What would happen without heart valves?

Blood would flow backwards as well as forwards with each contraction, so the heart would move far less blood onward. Leaking valves cause a milder form of exactly this problem.

Is the model messy to use?

If it uses coloured liquid, keep a tray or paper towel under it and empty it after the lesson. Air-driven models avoid this, which is worth considering for younger classes.

Last Updated: September 2026