basics of heart
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basics of heart
YouTubeInside Us已浏览 1531.9万 次2023年1月19日
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
0:06
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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0:18
basics of heart
已浏览 1531.9万 次2023年1月19日
YouTubeInside Us
0:06
Here's exactly what happens every time your heart beats 🫀 It starts with an electrical signal
已浏览 73万 次1 个月前
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已浏览 3.5万 次8 个月之前
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已浏览 10万 次3 周前
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已浏览 27.3万 次1 个月前
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