part of part of organ part hippocampal formation CA1 field of hippocampus fasciola cinerea UBERON:8440013 FC DMBA:112892265 MBA:982 This was added as a more precise mapping to the Allen brain atlas (as opposed to fasciolar gyrus) A small paired band that passes around the splenium of the corpus callosum from the lateral longitudinal stria to the dentate gyrus. The FC exhibits clear anatomical borders with the distalmost region of the CA1.