commissure

(kom’is-ir) ([L. commi u’ra]. The u ue which joins corresponding right and left parts, mainly of the brain and spinal cord. ansate c. See commis sur a ansata. arcuate c., the inner and upper fibers of the optic tract. Called alsoGudden's commi ure. Db: c. Same as Meynert’s c. Dasal gray c., a thin sheet of gray matter which closes in the floor of the third ventricle. Forel’s c., a structure of fibers extending acro the posterior prefrontal space and joining the body of Luys of each side. Gudden’s c. See arcuute ε. eynert’s c., nerve-fibers which extend from the tloor of the third ventricle through the optic tracts to the sub thalamic body. optic c., the cro ing of the two optic nerves. posterior c., the white band which joins the optic thalami. spinal c., the transverse portion connecting the lateral halves of the spinal cord. superior c. See Meyneri's c. Wernekinck's c., a decu ation within the pons in the middle line between the fibers of the tegmentum of the cerebral peduncles. white c., the anterior commi ure of the spinal cord.