Ключевые слова: anatomy, aorta, background, biology, biopsy, cardiac, cardiology, cartilage, cell, column arch, contraction, cross, education, elastic, fiber, health, healthy, hematoxylin, histological, histology, human, line, medicine, micro, micrograph, microscope, microscopic, microscopy, muscle, muscles, muscular, myocardium, myocyte, myofibril, nucleus, pattern, pulse, science, science photo, scientific, shape, showing, skeletal, smooth, striated, structure, texture, tissue, types, under,