====== Longitudinal fissure ====== {{ ::longitudinal_fissure.png?300|}} Is a deep groove that separates the two [[Cerebral hemisphere]]s. The great longitudinal fissure (or longitudinal cerebral fissure, or longitudinal fissure, or [[interhemispheric fissure]]) is the deep groove that separates the two [[hemispheres]] of the vertebrate brain. The [[falx cerebri]] The [[corpus callosum]] crosses the medial longitudinal fissure. ----