Human Heart

Quick Answer: The human heart model is an anatomical model of the adult heart used to teach its four chambers, its valves, the great vessels attached to it and the coronary arteries on its surface. Schools and colleges use it to show how the heart is built and how blood passes through it.

Heart Anatomy the Model Teaches

The heart is a muscular pump about the size of a closed fist, lying in the middle of the chest between the lungs and tilted so that its apex points down and to the left. A human heart model lets students handle that shape and find landmarks that are hard to picture from diagrams: the right and left atria with their ear-shaped auricles, the ventricles below, and the grooves on the surface that mark the boundaries between chambers.

Blood enters the right atrium from the superior and inferior venae cavae, passes through the tricuspid valve to the right ventricle and leaves through the pulmonary valve into the pulmonary trunk. Returning from the lungs in the pulmonary veins, it enters the left atrium, crosses the mitral valve into the left ventricle and is pumped out through the aortic valve into the aorta. Tracing this path in order is the core exercise.

The coronary arteries on the surface supply the heart muscle itself. The right coronary artery runs in the groove between the right atrium and ventricle, and the left divides into the anterior interventricular (left anterior descending) and circumflex branches. They are the starting point for explaining angina and heart attacks. This listing is the standard heart; separate listings cover the two-part, four-part, jumbo and pumping versions.

Specifications

Applications

• Tracing the path of blood through the four chambers and four valves
• Identifying the great vessels: venae cavae, pulmonary trunk, pulmonary veins and aorta
• Introducing coronary circulation before lessons on angina and myocardial infarction
• Practical exams where students label structures on the model

Care & Handling

• Hold the heart by its body, not by the thin vessel stumps at the top.
• Clean with a soft cloth dampened with mild soapy water, then dry.
• Keep it on its stand or in its box so it cannot roll off a bench.

Why Choose LabEquip

Most biology departments and nursing schools start with a standard heart model as the everyday teaching piece for the circulation topic. LabEquip lists it within biology lab products, and the human circulatory system model extends the lesson to the vessels of the whole body. Ask about size and parts through the contact page.

Frequently Asked Questions

How many chambers and valves does the heart have?

Four chambers, two atria above and two ventricles below, and four valves: tricuspid, pulmonary, mitral and aortic. The valves keep blood moving in one direction.

Why is the left ventricle wall thicker than the right?

The left ventricle pumps blood around the whole body at high pressure, while the right only pumps to the nearby lungs. It needs more muscle to generate that pressure.

Which vessels bring blood to the heart?

The superior and inferior venae cavae return blood from the body to the right atrium, and four pulmonary veins return oxygen-rich blood from the lungs to the left atrium.

What are the coronary arteries?

They are the first branches of the aorta and supply the heart muscle with oxygen. Narrowing of these arteries causes angina, and a blockage causes a heart attack.

Where is the heart in the chest?

It lies behind the sternum in the middle of the chest, between the lungs, with about two thirds of its mass to the left of the midline and its apex pointing down and to the left.

Which heart model should I choose?

The standard model suits everyday teaching. Choose a multi-part model when students need to open the heart, a jumbo model for large lecture rooms, and a pumping model to demonstrate blood flow.

Last Updated: September 2026