internal granular layer (cerebral cortex) internal granular layer (cerebral cortex) the internal granular layer of the cortex, also commonly referred to as the granular layer of the cortex, is the layer iv in the subdivision of the mammalian cortex into 6 layers. the adjective internal is used in opposition to the external granular layer of the cortex, the term granular refers to the granule cells found here. internal granular layerdetailsidentifierslatinlamina granularis internata98a14.1.09.312fma77811anatomical terms of neuroanatomy this layer receives the afferent connections from the thalamus and from other cortical regions and sends connections to the other layers. the line of gennari (occipital stripe) is also present in this layer. types of cerebral cortexstructure types isocortex true isocortex or neocortex proisocortex allocortex paleocortex archicortex line of gennari layers internal granular layer external granular layer cells betz cell pyramidal cell stellate cell authority control terminologia anatomica this article is issued from wikipedia. the text is licensed under creative commons - attribution - sharealike. additional terms may apply for the media files.