DISSECTION OF THE HEAD AND NECK 



349 



FIG. 160. 



Area acustica Taenia ventriculi quarti 



Tractus solitarius *' Nucleus N. vestibularis medialis [Schwalbe] 

 Nucleus tractus solitarii \ \\\ Kadix dyscend..!.^ X. v.-stibularis 



\ \ U Fila radicularia N. glossopharvngei 

 Alacinerea.\ 

 Nucleus alae cinereae ' 

 Trigonum N. hypoglossi 



Sulcus medianus fossae ^ t 



rhomboideae 

 Nucleus N. hy 



Fasciculus longitudinalis 



medialis 



Snbstantia reticularis grisea 

 (Nucleus lateralis inferior) 



Substantia reticularis alba 

 Fibrae cerebello-olivares ._. 

 Fila radicularia - 

 N. hypoglossi 



Stratum interolivare ^ 

 lemnisci 



Raphe 



Fibrae arcuatae externae 

 (to the corpus restiforme) " 



Nucleus arcuatus 

 Pyramis [medullae oblongatae] 



Nucleus tractus spinalis N. trigemini 



^Corpus restiforme 



.Tractus spinal is 

 N. trigemini 



Lateral areas of the for- 



matio reticularis 

 la radicularia N. vagi 

 .Nucleus ambiguus 



.Growers' tract and the tract to the 

 '' lateral funiculus from Deiters' 

 nucleus and from the red nucleus 

 Nucleus olivaris accessories 

 dorsal is 



"-.Fibrae arcuatae externae 



^ x -Hilus nuclei olivaris 



\ N. hypoglossus 

 Nucleus olivaris inferior 



Nucleus olivaris accessorius medialis 



Transverse section of the brain-stem of an adult through the middle of the olive. Magnification : 4.5 : 1 

 (Held. ) (After Spalteholz, Hand Atlas of Hum. Anat., Leipzig, 1903, vol. iii., p. 657, Fig. 727.) 



FIG. 161. 

 Nu.com. 



F.c.toEr. 



Transverse section through medulla oblongata of new-born child at level of decussatio lemnis- 

 corum. (Series ii. section No. 50.) 1 



C.c., canalis centralis ; Dec.l., decussatio lemniscorum ; F.a.i., fibrae arcuatae internae ; F.a.e., fibrae 

 arcuatae externae ; .F.c., fasciculus cuneatus Burdachi ; F.c. to F.r., bundles from fasciculus cuneatus to 

 formutio reticularis ; F.ds., fasciculus cerebellospinalis or direct cen-bellnr tract ; F.g., fasciculus gracilis 

 Golli ; F.v.p., fasciculus ventralis proprius ; .\ti.<-in., nucleus commissuralis ; Xit.f.c., nucleus funiculi 

 cuneati et gracilis ; A>/./.<y., nucleus funiculi grucilis : /'//., pyramis : T.n.n. I'.. tnu-tusspinnlisN. trigemini; 

 S.g., substantia gelatinosa [Rolandi]. (From Barker, The Nerv. Syst., New York, 1899, p. 479, Fig. 308.) 



1 Figs. 161-169 are from Weigert-Pal preparations by Dr. John Hewetson. 



