caption: The image shows an old book with a drawing of two human skeletons on it. The paper has text written on it, likely describing the anatomy of the human body. The two skeletons are standing side by side, with one on the left and one in the center. Both skeletons have their arms and legs outstretched, and their heads are tilted slightly to the side. The background of the paper is a light blue color, and the text is written in black ink.