How is this page different from the experience itself?

This localized page is for search and orientation. The interactive 3D experience opens at the language-neutral URL.

Which languages are officially reviewed?

Japanese and English are treated as the officially reviewed text for each exploration.

How are other languages handled?

Other languages are shown as machine translations from the English source with a link back to the original.

Heart and Circulation: Four Chambers Moving Blood

Explore atria, ventricles, valves, pulmonary circulation, and systemic circulation with a diagrammatic 3D model.

First discovery · 1/5

The heart is two pumps that drive two loops on the same beat

Before memorizing the heart by the names of its four chambers, read it as a double pump — the right side sends to the lungs, the left to the whole body. The blue pulmonary loop and the red systemic loop are separate loops yet connected on the same beat.

Background: Heart physiology overview.

Play the 30-second discovery sequence and follow where the blue loop and the red loop return to the heart.

First DiscoveryThe heart is two pumps that drive two loops at the same time

The blue pulmonary loop and the red systemic loop are pushed out from left and right on the same beat.

Discovery check

Which view of the heart should you read first in this experience?