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How Heart Valves Work: Opening & Closing Animation | 44
Watch how heart valves open and close during each heartbeat! This animation shows the precise mechanical action of cardiac valves as they control blood flow through your heart. See how the valve leaflets open to allow blood through, then snap shut to prevent backflow. Understanding this vital cardiac function helps explain how your heart pumps ...
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Here's exactly what happens every time your heart beats 🫀 It starts with an electrical signal from the SA node — your heart's natural pacemaker. That signal tells your atria to contract, pushing blood down into the ventricles. Then the ventricles contract (ventricular systole): 🫀 Right ventricle → pumps deoxygenated blood to the lungs 🫀 Left ventricle → pumps oxygen-rich blood to the rest of your body After that, the heart enters diastole — a brief relaxation where the chambers refill and pre
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