3- Medullary center (cerebral white mater)

1- Commisural fibers 2- Association fibers 3- Projecting fibers

Commisural fibers

1- Corpus callosum 2- Fornix 3- Anterior commissure 4- Posterior commisure 5- Habenula commissure

Corpus callosum

Corpus callosum

10cm

Corpus callosum

ROSTRUM

GENU

BODY

SPLENIUM

Different parts of corpus callosum

1- ROSTRUM 2- GENU 3- BODY 4- SPLENIUM

Corpus callosum

Fibers in different part of corpus callosum

1- rostrum orbital gyrus 2- genu frontal gyrus 3- body parietal and temporal gyrus 4- splenium occipital gyrus

Radiation of corpus callosum

Forceps minor

Forceps major

CONNECTION

Tapetum

Gray mater on the corpus callosum

Deepest gyrus (intralimbic lobe)

1- paraterminal gyrus 2- indisium grisium (medial and lateral

longituidinal stria) 3- gyrus fasciularis 4 - dentate gyrus 5- hippocampus

medial and lateral longituidinal stria

Fornix

Alveus Fimbria

Fornix

1- alveus 2- fimbria 3- posterior column (crus of fornix) 4- body 5- anterior column 6- pre and post commisural fibers Hippocampal commisure

Pre and post commisure fibers

Associating fibers

Short A.Long A.

Long asssociation fibers

1- sup. Longituidinal Fasciculus 2- inf. Longituidinal Fasciculus 3- uncinate Fasciculus 4- cingulate Fasciculus

Projecting fibers

1- Internal capsule 2- External capsule 3- Extreme capsule

Different parts of internal capsule

1- Ant. Limb 2- Genu 3- Post. Limb 4- Retro-lentiform 5- Sub-lentiform