This is the detail fragment of classic artwork "The Anatomy Lesson". It depicts a medical lecturer standing behind the podium, pointing at the half-sectioned human anatomical model with a pointer, explaining human body structure to nursing students in traditional nurse caps. Brain anatomical diagrams are posted on the background wall, with handwritten medical notes on the blackboard. The vintage watercolor texture restores the rigorous atmosphere of early medical anatomy classes, full of strong nostalgic sense of times.