The lowermost part of the lowest ventricle of the brain. During development the The central nervous system develops, in the womb, from a strip of tissue, passing along the back of the embryo, and whic... of the The main nerve trunk running down the spinal canal and connecting the individual’s mind and consciousness to the rest ... is in continuity with the ventricular system at this point. It was once considered that A cavity, within the spinal cord, which is filled with cerebrospinal fluid. Syringomyelia cavities come in various “sh... cavities usually fill from the ventricular system via the obex. This is no longer thought to be the This term refers to the process by which fluid accumulates inside syringomyelia cavities. Many theories exist, backed by... in most cases but it may still operate in some circumstances.