NEUROLOGY 



75 



Fasciculi of restiform body 

 Cerebello-olivary fibres 

 Pyramidal fasciculi 

 External arcuate fibres 



Fourth ventricle 



Rhomboid fossa 



Inferior part of rhomboid fossa 



Writing pen 

 Intermediate part of rhomboid fossa 



Lateral recess of rhomboid fossa 



Superior part of rhomboid fossa 

 Limiting groove of rhomboid fossa 



Inferior pit 



Superior pit 



Trigone of hypoglossal nerve 

 Medullary striae 

 Medial eminence (O. T. eminentia 



teres) 



Facial hillock 



Ash-like wing (O. T. trigonum vagi) 

 Acoustic area (O. T. trigonum 



acustici) 

 Blue place 



Roof of fourth ventricle 

 Posterior medullary velum 

 Taenia of fourth ventricle: junction 

 of epithelial part of roof with 

 compact nerve substance 



Bar 



Epithelial chorioid layer 

 Median aperture of fourth ventricle 



(foramen of Magendie) 

 Lateral aperture of fourth ventricle 

 Fastigium: "summit of roof" 



Hind-brain 



Pons ("bridge") Varolii 



Basilar groove 

 Oblique bundle of pons 

 Lateral fibres of pons 

 Brachium ("arm") of pons 



Sections of the pons 



Dorsal part of pons 



Median raphe 



Nucleus of the abducent nerve (O. T. 



nucleus of sixth nerve) 

 Motor nuclei of the trigeminal nerve 

 Descending or mesencephalic root of 



trigeminal nerve 

 Spinal tract of trigeminal nerve 

 Nucleus of spinal tract of trigeminal 



nerve 



Nucleus of facial nerve 

 Root of facial nerve 



First part 



Internal knee 



Second part 



Nuclei of acoustic nerve (O. T. 

 auditory nucleus) 



Nuclei of cochlear nerve 



Nuclei of vestibular nerve 

 Superior olivary nucleus 

 Nucleus of lateral lemniscus 

 Medial longitudinal fasciculus (O. T. 



posterior longitudinal bundle) 

 Reticular formation 

 Trapezoid body 

 Fillet or lemniscus 



Medial (sensory) fillet 



Lateral (acoustic) fillet 

 Basilar part of pons 

 Deep fibres of pons 

 Longitudinal pyramidal fasciculi 

 Nuclei of pons 

 Superficial fibres of pons 



Cerebellum, or small brain 



Convolutions of cerebellum 



Sulci of cerebellum 



Cerebellar vallecula 



Anterior notch of cerebellum (O. T. 



semilunar notch) 

 Posterior notch of cerebellum (O. T. 



marsupial notch) 



