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

Heart Attack Explained (3D Animation) | What Happens During a Heart Attack? | Myocardial Infarction

Heart Attack (Myocardial Infarction) Explained | Causes, Symptoms & Treatment #heart #heartattack

Heart Attacks DON'T Come Out of Nowhere