"Roughly C-shaped, the fornix extends from the hippocampus to the mammillary bodies of the hypothalamus and the anterior nuclei of the thalamus. It is a curvilinear bundle of white matter fibres that begins as a group of myelinated fibres called the alveus. The alveus joins to form the fimbria of the hippocampus. The fimbria of each hippocampus thickens and then splits off from the hippocampus to form the crus (leg) of the fornix."
"bilateral columns (anterior pillars): curve anteroinferiorly and divide anterior and posterior to the anterior commissure into postcommissural and precommissural fibre tracts 5."
"bilateral crura: ascending anterior to the splenium of the corpus callosum at the level of the superior colliculus (best seen on coronal images)"
"bilateral columns (anterior pillars): curve anteroinferiorly and divide anterior and posterior to the anterior commissure into postcommissural and precommissural fibre tracts 5."
Expected headings
"Fibre tracts"
"forniceal commissure: connecting the crura; also known as the hippocampal commissure"