The Anatomy Lesson of Dr. Deijman The Anatomy Lesson of Dr. Deijman The Anatomy Lesson of Dr. Deijman (alternative spelling Deyman) is a 1656, fragmentary painting by Rembrandt, now in Amsterdam Museum. It is a group portrait showing a brain dissection by Dr. Jan Deijman (161966). Much of the canvas was destroyed in a fire in 1723 and the painting was subsequently recut to its present dimensions, though a preparatory sketch shows the full group. The painting shows Dr. Deijman performing a brain dissection on the cadaver of an executed criminal, the Flemish tailor Joris "Black Jack" Fonteijn (1633/3456). Dr. Deijman's assistant, the surgeon Gijsbert Calkoen
The Anatomy Lesson of Dr. Nicolaes Tulp corpse. The surgically astute will notice that the origin of the exposed forearm muscles would seem to indicate that the flexor compartment originates at the lateral epicondyle, when it is, in fact, the medial epicondyle. It is the common extensor origin that originates at the lateral epicondyle. In a 2007 study, the American artist and anatomist David J. Jackowe and his colleagues demonstrated that the mysterious white cord that courses along the ulnar aspect of the cadaver's carpus and little finger, long thought to be either an ulnar nerve variant or artistic error, is most likely the tendon of an