Caudate nucleus; lamina affixa; medullary substance of insula
The cortex of the upper half of the insula has been scraped away to reveal the underlying medullary substance. The ependymal layer which covered the caudate nucleus has been removed. Much of the choroid plexus in the central part of the lateral ventricle has been cut away to expose its attachment to the lips (taeniae) of the choroidal fissure (cleft between fornix and lamina affixa). Note the choroidal artery (a branch of the a. cerebri posterior) passing anteriorly in this region.
Medullary substance projecting into superior frontal gyrus
Head of caudate nucleus (ependyma removed)
Medullary substance of insula
Internal capsule
Anterior tubercle of thalamus
Great anastomotic vein (cut end)
Lamina affixa
Choroidal fissure (cleft between taenia chorioidea and head of fornix)
Fornix (crus)
Cut end of superior longitudinal fasciculus
Hippocampus
Calcar avis
Occipital part radiations of corpus callosum
Lingual gyrus (cut across)
Cingulum (divided)
Precentral gyrus
Central sulcus
Branch of posterior cerebral artery in parieto-occipital fissure