CORPUS CALLOSUM
- CORPUS CALLOSUM
- largest commissure of brain
- connects cerebral cortex of two cerebral hemispheres
- connects all parts of neocortex except lower and anterior parts of temporal lobes
- connected by anterior commissure
- External Features
- floor of longitudinal cerebral fissure
- forms an arched interhemispheric bridge
- connecting medial surfaces of two cerebral hemispheres
- forms roof of lateral ventricles
- lies 4cm behind frontal pole
- 6cm in front of posterior pole
- attachments
- concave inferior aspect of corpus callosum
- attached to
- convex superior aspect of fornix
- by septum pellucidum
- convex superior aspect covered by indusium griseum
- embedded in it are medial and lateral longitudinal striae
- anterior cerebral vessels usually lie on its superior aspect
- covered on each side by cingulate gyrus
- separated by callosal sulcus
- parts
- rostrum
- extends backward and downwards
- to join the lamina terminalis
- forms floor of anterior horn of lateral ventricle
- fibers extend inferiorly to connect
- orbital surface of two frontal lobes
- genu
- thick , curved
- anterior extremity
- 4cm behind frontal pole
- forms
- anterior boundary of anterior horn of lateral ventricle
- fibers
- curve forwards on either side
- in to anterior parts of frontal lobe
- forming a fork like structure called
- forceps minor ( forceps = fork )
- trunk / body (middle part )
- forms the roof of central part of lateral ventricle
- connects
- frontal
- anterior parts of parietal lobe
- splenium ( posterior part )
- overhangs
- thalamic pulvinar
- pineal gland
- tectum
- inferior to splenium
- tela choroidea
- great cerebral vein of galen
- fibers
- connect
- posterior part of parietal lobe
- temporal and occipital
- fork like structure
- forceps major
- TAPETUM
- thin lamina of white fibers
- roof and lateral wall of posterior horn
| 1102 | Corpus callosum | Corpus callosum | ||
| 1103 | Rostrum | Rostrum | ||
| 1104 | Genu | Genu | ||
| 1105 | Truncus | Truncus | ||
| 1106 | Splenium | Splenium | ||
| 1107 | Indusium griseum | Indusium griseum | ||
| 1108 | Stria longitudinalis lateralis | Lateral longitudinal stria | ||
| 1109 | Stria longitudinalis medialis | Medial longitudinal stria | ||
| 1110 | Radiatio corporis callosi | Radiation of corpus callosum | ||
| 1111 | Forceps minor; forceps frontalis | Minor forceps; frontal forceps | ||
| 1112 | Forceps major; forceps occipitalis | Major forceps; occipital forceps | ||
| 1113 | Tapetum | Tapetum | ||
| 1114 | Lamina terminalis | Lamina terminalis | ||
| 1115 | Organum vasculosum laminae terminalis | Vascular organ of lamina terminalis | ||
| 1116 | Commissura anterior | Anterior commissure | ||
| 1117 | Pars anterior | Anterior part | ||
| 1118 | Pars posterior | Posterior part | ||
| 1119 | Fornix | Fornix | ||
| 1120 | Columna | Columna | ||
| 1121 | Fibrae precommissurales | Precommissural fibres | ||
| 1122 | Fibrae postcommissurales | Postcommissural fibres | ||
| 1123 | Corpus | Body | ||
| 1124 | Crus | Crus | ||
| 1125 | Commissura | Commissure | ||
| 1126 | Taenia fornicis | Taenia | ||
| 1127 | Septum pellucidum | Septum pellucidum | ||
| 1128 | Cavum | Cave | ||
| 1129 | Lamina | Lamina | ||
| 1130 | Nucleus septalis precommissuralis | Precommissural septal nucleus | ||
| 1131 | Nuclei septales | Septal nuclei | ||
| 1132 | Nucleus septalis dorsalis | Dorsal septal nucleus | ||
| 1133 | Nucleus septalis lateralis | Lateral septal nucleus | ||
| 1134 | Nucleus septalis medialis | Medial septal nucleus | ||
| 1135 | Nucleus septofimbrialis | Septofimbrial nucleus | ||
| 1136 | Organum subfornicale | Subfornical organ | ||
| 1137 | Nucleus triangularis | Triangular nucleus |