... reference to their origin, as cerebral those originating in the brain, andspinal those originating in the spinal cord.There are two sets of nerves and nerve-centers, which are intimately connected, ... apart. These are the cerebro-spinal system, consisting of the cerebro-spinal axis, and the cerebral and spinal nerves; and the sympathetic system, consisting of the chain of sympathetic ganglia, the nerves ... Project Gutenberg EBook of The People's Common Sense Medical Adviser The People's Common Sense Medical Adviser in Plain English 3 [Illustration: Fig. 14. Backbone, spinal column, or vertebral...