I4i8 



A MANUAL OF ANATOMY 



which separates it from the nucleus caudatus, and contains the 

 taenia semicircularis and, anteriorly, the vein of the corpus 

 striatum. Internally it is bounded, from before backwards, by 

 (i) the stria pinealis, (2) the trigonum habenulse, and (3) the 



Great Longitudinal Fissure 



^Genu of Corpus Callosum 



Anterior Cornu of 

 Lateral Ventricle 



^__li Caudate Nucleus 



Fifth Ventricle (Ventricle 



of the Septum) 



Anterior Pillars of Fornix 



_ Ant. Tub. of Optic Thalamus 



Tsenia Semicircularis 



- « Middle Commissure 



-Stria Pinealis 



,__ Posterior Commissure 



Trigonum Habenulae 



Lower Quadrigeminal Body 



V Vr-.Third Ventricle 



~Vi.,\ Pineal Peduncle 

 ^'\~r~ (Habenula) 



^■'AThalamic Groove for 

 ;;>;,_^ ' Margin of Fornix 



^>Pulvinar of Optic Thalamus 



\ "'Pineal Body 



\ ■*■ Superior Peduncle of Cerebellum 



Upper Quadrigeminal Body 



Fig. 598. — The Third Ventricle, Portions of the Lateral Ventricles, 

 Pineal Body, and Corpora Quadrigemina (Superior View) (Henle). 



(The Corpus Callosum, Fornix, and Velum Interpositum have been removed). 



corpora quadrigemina. It is divided into two areas, outer and 

 inner, by a groove which is directed backwards and outwards 

 from the inner border, near the anterior extremity, to the outer 

 end of the posterior extremity. This groove corresponds to the 



