<P> The spinal cord with dura cut open, showing the exits of the spinal nerves . </P> <Li> <P> The spinal cord showing how the anterior and posterior roots join in the spinal nerves . </P> </Li> <P> The spinal cord showing how the anterior and posterior roots join in the spinal nerves . </P> <Li> <P> The spinal cord showing how the anterior and posterior roots join in the spinal nerves . </P> </Li>

Where is the brain and spinal cord located