grey commissure is the structure that links the right and left sides of the gray matter in the spinal cord.
grey commissure is the structure that links the right and left sides of the gray matter in the spinal cord.
which structure links the right and left sides of the gray matter in the spinal cord?
grey commissure
grey matter in the spinal cord is known as the grey column which travels down the spinal cord distributed in three grey columns that are presented in an "h" shape. the forward-facing column is the anterior grey column, the rear-facing one is the posterior grey column and the interlinking one is the lateral grey column. the grey matter on the left and right side is connected by the grey commissure. the grey matter in the spinal cord consists of interneurons, as well as the cell bodies of projection neurons.
grey matter
in tethered spinal cord cases spina bifida can be accompanied by tethering of the spinal cord but in rare cases with spina bifida occulta. tethering of the spinal cord tends to occur in the cases of spina bifida with mylomeningocele. in a normal person the spine grows faster than the spinal cord during development which causes the end of the spinal cord to appear to rise relative to the bony spine next to it. by the time of birth the spinal cord is located between l1 and l2. in a baby with spina bifida the spinal cord is still attached to the skin around it preventing it from rising properly. this occurs because the spinal cord in a child with spina bifida is low lying and tethered at the bottom. at the time of birth the mylomeningocele is separated from the skin but the spinal cord is still stuck in the same place. as the child begins to grow the spinal cord remains in the same place becoming stretched out causing the tight cord and the tethering at the end. with this type of tethering there is an interference with the blood supply to the nerves and body which can then cause the deterioration of the body causing orthopedic, neurological, and urological problems. with milder forms of spina bifida such as occulta, may be related to the degree of strain on the cord which can become worse with physical activity, injury, pregnancy, bone spurs, or spinal stenosis. the tethered cord in this case might not be diagnosed until adulthood when it worsens and can still cause neurological, orthopedic, and urological dysfunctions.
tethered spinal cord syndrome