Since the CNS is so important it is protected by a number of structures. A B C D E. Spinal Cord Ppt Template For Powerpoint Presentation By Medicineppt Via Authorstream Powerpoint Presentation Ppt Template Powerpoint Templates The peripheral nervous system PNS consists of all the nervous system except the brain and spinal cord. . This canal is enclosed within the intervertebral foramen of the vertebrae. First the entire CNS is enclosed in bone. The nervous system consists of which three. The central nervous system CNS consists of the brain and spinal cord which are enclosed and protected by the cranium and vertebral column. Three things controlled by the cerebellum are. The brain is protected by the skull while the spinal cord is protected by the vertebra of the spinal column. The Oxford Dictionary of Sports Science Medicine Authors. Fortunately surrounding the spinal cord are various protective layers. Th