438 



THE BRAIN 



part of the chorioid fissure of the cerebrum ; and it is the lateral 

 part of the great transverse fissure. By the withdrawal of the 

 chorioid plexus it is converted into an artificial gap, which 



:ntral part of lateral ventricle 

 Grey matter of | 



aqueduct 

 quaeductus 

 cerebri 



Chorioid plexus 



Caudate nucleus 



Optic radiation 



Caudate nucleus (tail) 



y Optic radiation 

 ^ Inferior longitudinal bu 

 Tapetum 

 i \ Chorioid plexus 



\ Inferior horn of lateral ventricle 

 Alveus 



Lateral lemniscus 



Medial geniculate body 



Hippocampal gyru 



Hippocampus 

 Fimbria 



Fascia dentata 

 Lateral geniculate body 



Chorioid fissure 



FIG. 172. Frontal section through the Cerebrum, Mid-brain, and Pons in the 

 plane of the geniculate bodies. It shows the relation of the chorioid 

 fissure to the inferior horn of the lateral ventricle. 



leads directly from the exterior of the brain into the interior 

 of the inferior horn of the lateral ventricle. 



Plexus Chorioideus. The chorioid plexus is a system of 

 convoluted blood vessels, enclosed within a fold of pia 



