<P> The central canal , also known as ependymal canal , is the cerebrospinal fluid - filled space that runs longitudinally through the length of the entire spinal cord . The central canal is continuous with the ventricular system of the brain . The fourth ventricle narrows at a region called the obex to become the central canal of the spinal cord . The central canal helps to transport nutrients to the spinal cord as well as protect it by cushioning the impact of a force when the spine is affected </P>
where is the central canal of the spinal cord located
longitudinally through the length of the entire spinal cord