LESSON 01 · THE HEART
Explore the heart and discover how it keeps blood moving through your body.
Drag to rotate · Scroll or pinch to zoom
A CLOSER LOOK
Your heart is a muscular organ, roughly the size of your fist. It pumps blood through a network of vessels. This circulating blood delivers oxygen and nutrients to your organs and carries away waste.
The heart and blood vessels work together as the circulatory system.
English narration is coming later. The full lesson is available as text.
TAKE IT WITH YOU
The heart keeps blood circulating.
Atria receive. Ventricles pump out.
One to the lungs, one to the body.