246 



LABORATORY MANUAL OF HUMAN ANATOMY 



(cc) Gelatinous substance of Rolando (substantia gelatinosa [Ro- 



(cd) Dorsal nucleus (nucleus dorsalis [Clarkii, Stillingi]) (0. T. 

 Clarke's column). 



FIG. 103. 



Comma-shaped bundle 

 Middle root-zone \ 



Posterior medial root-zone^ 

 Radix posterior 



Lissauer's marginal zone 

 (posterior lateral root-zone) 

 Fasciculus cerebro- 

 spinalis lateralis 

 (pyramidalis lateralis) 



Fasciculus 

 cerebellospinalis 

 Lateral limiting layer 



of the gray matter 

 Bundle to lateral funicu- 

 lusfrom Deiters's nucleus' 



and the red nucleus 

 Fasciculus anterolateral 

 superficialis [Gowersil] 



Corpora quadrigemina' 

 (thalamus path) 



. Helweg's bundle 

 Fila radicularia radicis anterioris 

 Bundle connecting formatio reticularis with ' 

 anterior funiculus (black : to the formatio / 



reticularis) 

 Anterior marginal bundle (bundle to anterior 



funiculus from nucleus fastigii) / 



Commissural bundle 



Fasciculus gracilis [Golli] 



I Oval bundle of posterior funiculus (median root-zone) 



I I Ventral area of posterior funiculus (anterior root-zone) 



Stratum zonale 

 (marginal zone) 



Substantia gelatinosa 

 [Rolandi] 



Caput cplumnae 

 posterioris (nucleus 

 of the posterior 

 horn) 



- Nucleus dorsalis 

 [Stillingi, Clarkii] 



Dorso- 

 lateral 



Inter- 

 mediate 



Ventral 



(ventrolateral 



and ventro- 



medial) 



Ganglion- 

 cell 

 groups 



of 



anterior 

 horn 



Dorsomedial group of ganglion cells of 

 anterior horn 



Fasciculus sulcpmarginalis (bundle from the 

 superior colliculi of the corpora quadrigemina) 

 Fasciculus cerebrospinalis anterior (pyramidalis anterior) 



Schematic transverse section of spinal cord with conduction paths and groups of ganglion cells. 

 Magnification : circa 12.5 : 1 (Held). (All of the paths descending from the brain to the spinal cord are 

 in colors ; all other paths in the spinal cord, ascending and descending, are indicated in black.) (After 

 Spalteholz, Hand Atlas of Human Anatomy, Leipzig, 1903, vol. iii. p. 671, Fig. 749.) 



The White Matter. 



In the sections recognize in the white matter the position of 

 each of the following : 



(a) In the anterior funiculus (funiculus anterior) : 



(aa) Anterior cerebrospinal or pyramidal fasciculus (fasciculus 



cerebrospinalis anterior [pyramidalis anterior]) (0. T. 

 direct pyramidal tract). 



(ab) Proper anterior fasciculus (fasciculus anterior proprius 



[Flechsigi]) (0. T. anterior ground-bundle). 



(b) In the lateral funiculus (funiculus lateralis) : 



(ba) Lateral cerebrospinal or pyramidal fasciculus (fasciculus 



cerebrospinalis lateralis [pyramidalis lateralis]) (0. T. 

 crossed pyramidal tract). 



(bb) Cerebellospinal fasciculus (fasciculus cerebellospinalis) (0. 



T. direct cerebellar tract of Flechsig). 1 



1 This would be better designated fasciculus spinocerebellaris dorsolateralis. 



