Human Lungs With Heart Model

Human Lungs With Heart

Combined cardiopulmonary anatomical integration accurately demonstrates spatial relationships between the heart and lungs.

Sectioned internal detailing reveals major vessels, bronchi, and internal organ structures with clarity.

$18.70

Quick Answer: The human lungs with heart model shows the two lungs and the heart together in their natural positions in the chest, with the trachea, bronchi and great vessels. It is used to teach how the heart and lungs work as one system through the pulmonary circulation.

The Heart and Lungs as One Unit

Studying the heart and lungs separately leaves out the connections that make them work. In a lungs with heart model, the heart sits in the middle of the chest between the two lungs, in the region called the mediastinum, tilted so that its apex points down and to the left. The left lung is shaped around it, with a cardiac notch in its front edge, and the pericardium enclosing the heart lies against the medial surfaces of both lungs.

The model makes the pulmonary circulation easy to trace. The pulmonary trunk leaves the right ventricle and divides into right and left pulmonary arteries, which carry deoxygenated blood to the lungs; the pulmonary veins return oxygenated blood to the left atrium. These are the only arteries in the adult body carrying deoxygenated blood and the only veins carrying oxygenated blood, a point that regularly appears in exams.

The airway and vessels also cross in instructive ways. The trachea runs down behind the aortic arch before dividing into the main bronchi, and the arch passes over the left main bronchus on its way to becoming the descending aorta. Models vary in how much of the great vessels and airway they include and whether the heart can be lifted out, so those details should be confirmed; the separate human heart model covers the chambers and valves in more depth.

Specifications

Model of	Human heart and both lungs in their chest positions
Airways shown	Trachea and bronchi, as usually included
Vessels shown	Aorta, pulmonary trunk, pulmonary arteries and veins, as usually included
Key relationship	Heart in the mediastinum, cardiac notch of the left lung
Level	Secondary biology, nursing and paramedical anatomy
Removable parts and size	Confirm at enquiry

Applications

Teaching the pulmonary circulation and the double circulation of blood
Showing the position of the heart in the chest relative to the lungs
Explaining how blood is oxygenated in the lungs before returning to the left side of the heart
Introducing cardiopulmonary topics in first aid and nursing courses

Care & Handling

Lift the lungs with heart model by its base or stand, not by the trachea or vessels, which are the thinnest parts.
If the heart or lungs detach, return each piece to its seating gently and check the fit before carrying the model.
Clean painted surfaces with a slightly damp soft cloth and let them dry in air.

Why Choose LabEquip

Biology teachers and nursing tutors often want one model that shows how the heart and lungs connect, rather than two separate organs. LabEquip offers it as part of its biology lab products, with the human lung model available for lobe-level detail. Send your requirements through the LabEquip contact page.

Frequently Asked Questions

What is the mediastinum?

It is the central compartment of the chest between the two lungs. It contains the heart in its pericardium, the great vessels, the trachea, the oesophagus and other structures.

Why is the blood in the pulmonary arteries low in oxygen?

What makes a vessel an artery is its direction of flow, away from the heart, rather than how much oxygen its blood holds. The pulmonary arteries take blood from the right ventricle to the lungs, where it picks up oxygen.

What is the cardiac notch?

It is an indentation in the front edge of the left lung where the heart extends toward the left side of the chest. It is one reason the left lung is smaller than the right.

How does blood get oxygen in the lungs?

Blood in the capillaries around the alveoli is separated from the air by very thin walls. Oxygen diffuses into the blood and carbon dioxide diffuses out, and the pulmonary veins carry the oxygenated blood to the left atrium.

What is the difference between pulmonary and systemic circulation?

The pulmonary circulation carries blood from the right side of the heart through the lungs and back to the left side. The systemic circulation carries it from the left side to the rest of the body and back to the right side.

Is this model suitable for secondary schools?

Yes. It fits lessons on the heart, the lungs and circulation in secondary biology, and it is also detailed enough for introductory nursing and paramedical anatomy.

Last Updated: September 2026