Spinal cord, spinal nerves, and spinal arteries, with aorta, shown in isolation, in 2 numbered illustrations. 1 illustration of spinal cord shown with head, vertebrae divided, dura mater divided, reflected to show cord and spinal nerves with posterior spinal arteries. Aorta and carotid arteries also shown. Postero-lateral view. 1 illustration of spinal cord shown in isolation with ribs, dura mater (reflected), spinal nerves and anterior spinal arteries. Aorta and carotid arteries also shown. Anterior view.