196 



TOPOGRAPHICAL ANATOMY OF THE 



The mammillary body (corpus mammillare) is a small but promin- 

 ent white elevation at the anterior end of the inter-peduncular fossa, 

 and contains a nucleus of grey matter. The columns of the fornix end 

 in it, and from it arise the fasciculus thahnnomamriiillaris, which 

 passes to the anterior part of the thalamus, and the fasciculus 



Corpus callosum.— 



Lateral ventricle. -- 

 Fornix.-i 



Thalamus. 



Lateral geniculate body.. 



Anterior coUiculus. .-r-^ 



- Caudate nucleus. 

 -Claustrum. 

 .External capsule. 

 — Internal capsule. 



Lentiform nucleus. 



Fimbria hippocampi. 

 -Fascia dentata. 



Cerebellar peduncles. 



Fig. 94.— Horizontal section of the brain at the level indicated by E in Fig. 89. 



'pedimculoinammillaris that runs along the floor of the third ventricle 

 to the tegmentum. 



The tuher cinereum is an elevation of grey matter between the 

 mammillary body and the optic chiasma. It is continuous with the 

 lamina terminalis and the anterior perforated substance, and is con- 

 nected with the hypophysis by a hollow stalk, the infundibiduin. 



The Jtyjooj^hysis cerebri, rounded or oval in outline and flattened 

 dorso-ventrally, occupies the sella turcica of the sphenoid bone. It 



