Ключевые слова: anatomy, aorta, artery, atrium, background, biology, blood, body, cardiac, care, cell, contraction, coronary, disease, drawing, fiber, fibers, graphic, health, healthcare, healthy, heart, human, image, internal, isolated, life, medical, medicine, muscle, muscular, musculoskeletal, myocardium, normal, nucleus, organ, science, scientific, single, skeletal, smooth, striated, structure, system, tissue, vein, ventricle, white,