Anatomy & Physiology
Explore the normal structure and function of the cardiovascular system.
Follow one heartbeat from the sinoatrial node through the atria, atrioventricular node and His–Purkinje system, then use that physiology to understand the P wave, PR interval,...
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How the thin endothelial lining of blood vessels helps regulate vascular tone, clotting, inflammation and fluid movement.
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What determines how much blood the heart can pump? Follow ventricular filling, contraction and ejection to understand preload, contractility, afterload, stroke volume and cardiac output.
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