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

First winner in GNCC history to swap a tire mid race! 48 seconds for the full pit and tire change

😆💯LKG first day 📈தருணங்கள் 🤣 #shorts #school #comedy #viral #fun

Baby’s First Crawl AND First Word In One Video