LATERAL VENTRICLES 



695 



the region of the so-called transverse fissure, through which the choroid plexus 

 projects. This fissure is therefore not a breach in the ventricle, but simply a thin 

 part of the wall through which the locally thickened pia mater (choroid plexus) 



Fig. 414. — Diagkam.matic Coronal Section of Third and Lateral Ventricles. 

 (From Schwalbe, slightly modified.) lateral VENTRICLE 



CA UDA TE 

 NUCLEUS 



TAENIA SEMI- 

 CIRCULARIS 



Velum interpositum 



Veins of Galen 



Choroid plexuses of third 

 ventricle 



OPTIC THALAMUS 

 THIRD VENTRICLE 



TEGMEN 



The red lines indicate the epithelium. 



Fig. 415. — Coronal Section of the Hemispheres passing through the Anterior 

 cornua of the lateral ventricles. 



(From a mounted specimen in the Anatomical Department of Trinity College, Dublin.) 



CAPSULE \~\ 

 LESTICULA R \X \ 



SVCLECS 

 CLAVSTRVil 



OLFACTORY TRACT 



GREA T 

 LOMil- 

 TCUINAL 

 FISSURE 



AXTERIOR 

 HOR.y OF 

 LATERAL 

 VESTRI- 

 CLE 



GREAT 

 LOSGI- 

 TUDINAL 

 FISSURE 



•an be seen. Each lateral ventricle consists of a central part or body and three 

 •ornua: an anterior, an inferior or descending, and a posterior. 



The body may be defined as the portion of the ventricle which extends from 



