Ключевые слова: abstract, air, anatomy, background, biology, blue, bokeh, breath, breathe, breathing, bronchial, bronchitis, bronchus, care, color, design, disease, drawing, education, effect, exhale, graphic, health, healthy, human, illustration, image, infection, internal, lung, lungs, medical, medicine, model, nobody, organ, physiology, pneumology, pneumonia, pulmonary, pulmonology, respiration, respiratory, science, silhouette, structure, system, trachea, turquoise,