Ключевые слова: anatomy, arteries, atria, atrium, background, biology, blood, cardiac, cardiology, cell, classroom, cuts, disease, education, epithelium, equipment, experiment, fiber, health, healthy, heart, histology, human, internal, isolated, laboratory, medical, muscle, muscles, muscular, nucleus, organ, oxygen, parts, patient, physiology, pig, pulmonary, red, science, scientific, smooth, structure, structures, study, test, tissue, valves, veins, white,