Ключевые слова: 3 dimensional, 3d, annotated, artwork, biological, biology, black background, cardiology, concept, concepts, conceptual, conduction, contraction, diagnostic, diagnostics, ecg, electrocardiogram, electrocardiograph, graph, health, healthcare, healthy, heart beat, heart rate, heartbeat, illustration, impulse, isolated, measuring, medical, medicine, monitoring, nobody, noone, normal, plain background, poster, pulse, technique, trace monitor, white background,