Meaning “water within the spinal cordThe main nerve trunk running down the spinal canal and connecting the individual’s mind and consciousness to the rest of his or her body. It is about the size of a person’s little finger, in diameter. It cannot repair itself if damaged.”, this word is synonymous with syringomyeliaA cavity, within the spinal cord, which is filled with cerebrospinal fluid. Syringomyelia cavities come in various “shapes and sizes”, from short, spindle-shaped cavities through to long, tense cavities extending throughout the greater part of the spinal cord. Read more, although some authorities do make a distinction between the two terms. Some say that hydromyelia describes a state where the embryonic central canalThe central nervous system develops, in the womb, from a strip of tissue, passing along the back of the embryo, and which then rolls itself into a tube before sinking below the skin surface. This primitive neural tube then develops into the central nervous system, made up of the brain and the spinal cord. In the fully developed adult (i.e. by the age of about 18) the original tubular configuration of the embryonic structure is represented by chambers in the centre of the brain, known as ventricles. In the spine, the tubular structure is all-but obliterated, as the spinal cord develops, being represented by just a narrow tube in the centre of the cord, known as the central canal. persists or re-expands. The word syringomyeliaA cavity, within the spinal cord, which is filled with cerebrospinal fluid. Syringomyelia cavities come in various “shapes and sizes”, from short, spindle-shaped cavities through to long, tense cavities extending throughout the greater part of the spinal cord. Read more is then reserved for fluids accumulating inside the spinal cordThe main nerve trunk running down the spinal canal and connecting the individual’s mind and consciousness to the rest of his or her body. It is about the size of a person’s little finger, in diameter. It cannot repair itself if damaged., other than within the central canalThe central nervous system develops, in the womb, from a strip of tissue, passing along the back of the embryo, and which then rolls itself into a tube before sinking below the skin surface. This primitive neural tube then develops into the central nervous system, made up of the brain and the spinal cord. In the fully developed adult (i.e. by the age of about 18) the original tubular configuration of the embryonic structure is represented by chambers in the centre of the brain, known as ventricles. In the spine, the tubular structure is all-but obliterated, as the spinal cord develops, being represented by just a narrow tube in the centre of the cord, known as the central canal..