Ключевые слова: 3d, abstract, anatomy, auricle, background, biology, body, cardiac, cardio, cardiogram, cardiology, care, chest, colour, coronary, digital, doctor, ecg, education, effects, ekg, frequency, graph, graphic, health, healthy, heart, heartbeat, hospital, human, illustration, imagination, internal, life, medical, medicine, model, organ, patient, pulse, rate, science, symbol, technology, texture, threedimensional, vein, ventricle,