308 



HUMAN ANATOMY. 



THE STRUCTURE OF THE CEREBRUM. 



On cross-section the cut brain surface shows an outer s;ray 

 cortex and the inner white matter and cavities, one to each 

 hemisphere: the lateral ventricles. The white matter contains 



-IV 



car- 



FIG. 141. 



Scheme of the nuclei and root-fibres of the cranial nerves. 

 (After Edinger.) (Whiteliead.) 



certain masses of gray matter : the optic thalami and the corpora 

 striata, which latter are on each side of the brain divided into 

 the caudate and lenticular nuclei by the internal capsule. Be- 

 tween the optic thalamus and caudate nucleus on the inside and 

 the lenticular nucleus on the outside passes the broad band of 



