NEUROLOGY 



77 



Anterior recess 

 Posterior recess 

 Posterior perforated substance 



Peduncle of cerebrum 



(O. T. crus cerebri) 

 Aqueduct of cerebrum (O. T. iter e 



tertio ad quartum ventriculum) 

 Lateral sulcus 

 Sulcus of oculomotor nerve 



Sections of cerebral peduncle 



Tegmentum ("cover") 



Central gray layer 



Reticular formation 



Medial longitudinal fasciculus (O. T 

 posterior longitudinal bundle) 



Descending root of trigeminal nerve 



Nucleus of descending root of trigemi- 

 nal nerve 



Nucleus of oculomotor nerve (O. T. nu- 

 cleus of III. nerve) 



Nuclei of tegmentum 

 Red nucleus 



Decussations of tegmenta 



Decussation of brachium conjunc- 

 tivum 



Lateral fillet 



Medial fillet 



Black substance 



Base of peduncle 



Quadrigeminal bodies (O. 



T. optic lobes) 

 Quadrigeminal layer 

 Superior hillock (O. T. anterior body 



or nates) 

 Inferior hillock (O. T. posterior body 



or testis) 



Superior quadrigeminal brachium 

 Inferior quadrigeminal brachium 



Sections of quadrigeminal bodies 

 Zonal layer 

 Gray layer of superior colliculus 



Nucleus of inferior colliculus 

 Deep white layer 



Forebrain 

 Interbrain 



Third ventricle 



Entrance to the aqueduct of the cere- 

 brum 



Posterior commissure of the cerebrum 



Interventricular foramen of Monroe 



Hypothalamic sulcus of Monroe 



Intermediate mass (O. T. middle, or 

 soft, or gray, commissure) 



Optic recess 



Recess of infundibulum 



Anterior commissure of cerebrum 



Triangular recess 



Hypothalamus (0. T. subthalamic 

 region) 



Mammillary part of h y - 



pothalamus 

 Mammillary body 

 Optic part of hypothala- 



m u s 



Tuber cinereum (" ash-like tuber ") 

 Infundibulum (" funnel ") 

 Hypophysis (O. T. pituitary body) 



Anterior lobe 



Posterior lobe 

 Optic tract 



Medial root 



Lateral root 

 Optic chiasm 

 Terminal lamina 



Sections of hypothalamus 



Hypothalamic nucleus, or Luy's body 



(O. T. subthalamic nucleus) 

 Gray part of hypothalamus 

 Superior commissure of Meynert 

 Inferior commissure -of v. Gudden 

 Nuclei of mammillary body 



