chap, xvn.] THE MEDULLA OBLONGATA. 



the pyramids and farther on into the pons Varolii and 

 eras cerebri. 



186. The greater portion, of the anterior column. 



Fig. 88. Transverse Section through the Medulla Oblongata in the 

 Eegion of the Pyramidal Decussation. 



y matter ; fa, part of 

 gelatinous nucleus 



erior pyramidal tract; ct/a, lateral nucleus of grey 

 aerior column not decussating' ; ng, nucleus gracilis; g, 

 of posterior born ; 11, spinal accessory nerve. (.Henle.) 



fpy, Anterior 

 anteri 



of white matter of the cord is situated deeper in the 

 medulla than the pyramidal tracts. 



(c) The lateral column of white matter of the 

 cord can be traced into the medulla as the lateral 

 tract. In the upper part of the medulla it becomes 

 hidden from view by the olivary bodies and the 

 transversely arranged white tracts. The lateral tract 



