9 6 



HEAD AND NECK 



Postero-median septum 



termed, post, septum 

 Fasciculus gracilis 



Fasciculus cuneatus 

 Substantia gela- 

 tinosa Rolandi 

 Lateral funiculus 



Central canal 



Anterior column 

 Grey commissure 

 Antero-median fissure 

 Fila of anterior 

 nerve-root 

 Anterior funiculus 

 Postero-median 

 septum 



Substantia Rolandi 



Thoracic nucleus 

 (O.T. posterior 

 vesicular column) 

 Lateral column 



Anterior column 

 Antero-median fissure 



Postero-median septum 

 Entering fila of 

 posterior nerve-root 



Thoracic nucleus 

 (O.T. posterior 

 vesicular column) 

 Lateral column 



ntero-median 

 fissure 



Postero-median 

 septum 



_ Antero-median 

 ~ fissure 



FIG. 27. Transverse sections through the Medulla 

 Spinalis in different regions. A. Cervical Region ; 

 B. Mid -thoracic Region; C. Lower Thoracic 

 Region ; D. Lumbar Region. 



region a faint longitudinal groove runs 



and lies between 

 the postero- 

 median septum 

 and the posterior 

 grey column. 

 The lateral funi- 

 culus occupies the 

 concavity of the 

 grey crescent. 

 Posteriorly, it is 

 bounded by the 

 posterior grey 

 column and the 

 postero-lateral sul- 

 cus, whilst, an- 

 teriorly, it extends 

 as far as the most 

 lateral fila of the 

 anterior nerve- 

 roots. The an- 

 terior funiculus in- 

 cludes the white 

 matter between 

 the antero-median 

 fissure and the 

 anterior column 

 of grey matter, 

 and also the white 

 matter which 

 separates the thick 

 margin of the 

 anterior grey 

 column from the 

 surface of the 

 spinal medulla 

 and is traversed 

 by the emerging 

 fila of the an- 

 terior nerve-roots 

 (Figs. 26, 27). 



In the cervical 

 downwards on the 



