The painting shows a man lying on a table, in the middle. He's probably dead and his arm is cut open by another man, the teacher. The man is lying straight to the left, light focussed on his naked body, with only a cloth covering his private parts. The teacher is standing at the right, next to the body, seven other men are looking interested at the body with all a pointy beard. Two men positioned at the outer left, two men hanging over the body, looking even more interested. Three other men are sitting at the back, right behind the men hanging over the body. They are only wearing a white collar, you cannot see the lower half of the bodies of both the seven men, and the teacher. The teacher holds a instrument, but is looking at the two men at the left, not at the body. He wears a short hat. The background is completely dark, and as we said, only light is focussed on the body of the man lying on the table. It is painted in a realistic style, using well-chosen colours.