On anatomy of nerves by galen of pergamon

In this treatise Galen gives a synopsis of the description of the nerves contained in his long anatomical work “On Anatomical Procedures.” He omits the olfactory nerves from the cranial group, considering them a part of the brain. Out of loyalty to his teacher, Marinos, he numbers seven cranial nerves but actually identifies ten, misconstruing the fourth, omitting the sixth, and describing all the others. The sympathetic is linked with the trigeminal but most parts of it are described. The spinal nerves and their plexuses are briefiy but quite accurately described. He leaves no doubt that he identified these nerves anatomically and understood much of their function.