GANGLIONAR GRAY MATTER. 



2O7 



axones of those cell-bodies run both toward the pons and toward 

 the cerebral cortex. The corpus striatum, therefore, forms a 

 relay-station in an efferent conduction tract and, perhaps a less 

 important one, in an afferent tract. 



Of the centrifugal fibers note the following three groups : 

 (i) The cortico-striate radiation made up of corticifugal and 



Caudate nucleus 



Stria terminalis 



Pulvinar 



Brachium superius 



Inferior 

 quadrigeminal 

 colliculus 

 Medial genicu- 

 late body 



Lateral genicu- 

 late body 



Corpus 



mammillare 



Optic tract 



Lateral stria of 

 oltactory tract 



Olfactory bulb 



Fig. 65. Dissection of brain to show geniculate bodies, optic tract, nucleus 

 amygdalae, etc. (After Morris's Anatomy.) 



corticipetal fibers running from and to the equatorial zone of 

 the hemisphere. (2) The striato-thalamic fibers, which are in 

 part crossed fibers, pass through the inferior lamina of the in- 

 ternal capsule and terminate in many nuclei of the inter-brain, 

 mid-brain and pons; some of them pierce the superior lamina 

 of the capsule. They run to the thalamus, hypothalamus and 



