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Human Heart Anatomy– Internal Structure & Blood Flow Explained
This highly detailed anatomical visualization of the human heart reveals its internal structures, including the ventricles, atria, major vessels, and supporting components like chordae tendineae and papillary muscles. The image highlights how the heart functions as a powerful pump, circulating oxygen-rich and oxygen-poor blood throughout the ...
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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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