What part of the nervous system is completely protected by bone a central nervous system be peripheral nervous system see interneurons desensory neurons

The part of the nervous system that is completely protected by bone is the **central nervous system (CNS)**. The CNS includes the brain and spinal cord, both of which are encased in bony structures: the skull protects the brain, and the vertebral column (spine) protects the spinal cord. In contrast, the peripheral nervous system (PNS) consists of nerves that extend outside the CNS and are not protected by bone.