This is what happens inside your body when you raise your arms 🩻 Every time you lift your arms above your head, gravity pulls the blood straight back toward your heart. Your circulatory system is constantly working against gravity to keep blood flowing — this is why surgeons elevate injured limbs to reduce swelling and bleeding. Pretty wild to actually see it happen in real time. ✅Follow @drdavidabbasi for More Daily Medical Content & Health Tips!🌴😷Schedule a consultation in Delray Beach! Vis

Understanding the Circulatory System and Blood Vessels

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