❤️01
Heart Anatomy
See the four chambers and the big vessels. Learn which blood goes where.
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Blood Flow Through the Heart
Follow one drop of blood on its full loop through the heart and lungs.
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The Heart Valves
Meet the AV and semilunar valves, and hear the lub-dub they make.
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The Conduction System
Go from the SA node to the Purkinje fibers. This is the heart's own wiring.
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The Cardiac Cycle
Watch the heart squeeze and rest. See the valves, and learn where the heart sounds come from.
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The ECG
Learn the P, QRS, and T waves. Each bump matches a step in the heart's wiring.
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