438 



THE BRAIN 



pons, on either side by the projecting temporal lobes of 

 the cerebrum, and anteriorly by the orbital portions of the 

 frontal lobes of the cerebrum. At the present stage of the 



Olfactory bulb 



Olfactory tract 



Optic nerve 



Substantiate 



forata anteric 



Optic tract 



Motor root of 

 facial nerve 

 custic nerve 



Sensory root of 

 facial nerve 



Glosso-pharyngeal 

 nerve 



Hypoglossal 

 nerve 



Pyramid 



Vagus nerve 

 Accessory nerve 



Hypoglossal nerve 



Spinal medulla (cut) 

 FIG. 174. The Base of the Brain with the Cerebral Nerves attached. 



examination of the brain, the bottom of this hollow is hidden 

 from view by the arachnoid, which stretches over it like a 

 veil ; but the hypophysis will be seen within its limits if it has 

 been removed with the brain. Passing laterally from either 

 side of the anterior part of this recess will be seen the deep 



