Wikipedia
For the engineering project, see Indiana Central Canal.
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 represents the adult remainder of the central cavity of the neural tube. It generally occludes (closes off) with age.
Usage examples of "central canal".
As she rode along the right-of-way she watched the hundreds of Mexican and Indian laborers at their work on the grade and thought of the men who had built the South Central Canal.
Running down the axis of the cord is the small central canal (which sometimes vanishes in adults), all that is left of the hollow in the original chordate nerve cord.
James motioned for Jazhara and William to follow him and they continued along their way, heading for the central canal.
And the muscle fibers in the central canal of her cervix, which ought to be softening in anticipation of labor, are still tough.