Ключевые слова: aid, anatomical, anatomy, background, biology, body, class, classroom, close up, closeup, college, concept, copy space, detail, education, educational, girl, hands, heart, high school, human, internal, intestines, lab, laboratory, learning, lesson, lungs, model, organ, organs, pupil, school, science, secondary, skeleton, student, study, studying, teaching, teaching aid, teen, teenager, tool, unrecognizable, wisdom,