How the Heart Beats | Cardiac Cycle Explained | Human Heart Function in 3D
0:11
YouTubeDr.Amrita Chandra
How the Heart Beats | Cardiac Cycle Explained | Human Heart Function in 3D
Have you ever wondered how your heart beats continuously without stopping? In this video, you'll learn the complete process of the heartbeat (cardiac cycle), from the heart's natural pacemaker to the contraction and relaxation of the heart muscles. Discover how electrical signals coordinate each heartbeat to pump oxygen-rich blood throughout ...
783 views4 weeks ago
Shorts
Here's exactly what happens every time your heart beats πŸ«€ It starts with an electrical signal from the SA node β€” your heart's natural pacemaker. That signal tells your atria to contract, pushing blood down into the ventricles. Then the ventricles contract (ventricular systole): πŸ«€ Right ventricle β†’ pumps deoxygenated blood to the lungs πŸ«€ Left ventricle β†’ pumps oxygen-rich blood to the rest of your body After that, the heart enters diastole β€” a brief relaxation where the chambers refill and pre
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