THE CEREBRUM 



493 



Plexus Chorioideus. The chorioid plexus is a system of 

 convoluted blood-vessels enclosed within a fold of pia 

 mater which is prolonged, into the inferior horn of the 



Body of lateral ventricle 

 Grey matter of 

 aqueduct 

 uaeductus 

 cerebri 



Chorioid plexus 



Caudate nucleus 



Optic radiation 



, Caudate nucleus (tail) 



""Optic radiation 

 Inferior longitudinal bui 

 Tapetum 

 \ 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. 202. Frontal section through the Cerebrum, Mid-brain, and Pons in the 

 plane of the geniculate bodies. It shows the relation of the dentate and 

 chorioid fissures to the inferior horn of the lateral ventricle. 



lateral ventricle, through the chorioid fissure of the cerebrum. 

 It lies on the surface of the hippocampus and, at the 

 posterior extremity of the thalamus, it becomes continu- 

 ous with the chorioid plexus in the central part of the 



