medical_animation on Instagram: "Did you know your heartbeat can literally paint patterns in water? Arterial blood flow is pulsatile every heartbeat sends a pressure wave through your arteries. So when a small finger wound happens to involve an artery and the hand is placed in water, the blood disperses in rhythmic bursts that perfectly sync with each heartbeat. It’s not an EKG… It’s your heart’s mechanical rhythm made visible. ❤️‍🔥 The human body is far more fascinating than any textbook can s