fornices (brain) 《英文msh词典》Fornices (Brain) ; [入口词] Fornices (Brain) ; [主题词] Fornix (Brain) ; [英文释义] Heavily myelinated fiber bundle of the TELENCEPHALON projecting from the hippocampal formation to the HYPOTHALAMUS. Some authorities consider the fornix part of the LIMBIC SYSTEM. The fimbria starts as a flattened band of axons arising from the subiculum and HIPPOCAMPUS,which then thickens to form the fornix.