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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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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On August 21, 1986, a sudden, catastrophic natural phenomenon occurred at Lake Nyos, a deep volcanic crater lake in northwestern Cameroon. Deep beneath the surface, years of volcanic activity had heavily saturated the water with a massive, highly pressurized concentration of carbon dioxide gas. A sudden underwater landslide triggered a limnic eruption, causing the lake to violently flip and release a massive gas bubble into the night air. The explosion shot a dense, heavy cloud of roughly one hu
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On August 21, 1986, a sudden, catastrophic natural phenomenon occurred at Lake Nyos, a deep volcanic crater lake in northwestern Cameroon. Deep beneath the surface, years of volcanic activity had heavily saturated the water with a massive, highly pressurized concentration of carbon dioxide gas. A sudden underwater landslide triggered a limnic eruption, causing the lake to violently flip and release a massive gas bubble into the night air. The explosion shot a dense, heavy cloud of roughly one hu
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