146 



ELEMENTS OF HISTOLOGY, ichap.xvn. 



nl 



Fig. 89. Transverse Section through the Medulla Oblongata in the 

 Region of the Fourth Ventricle. 



fpy, Anterior pyramidal tract ; fr, restiform bodies ; wp, nucleus of pyramids; 

 no, olivary nucleus; >, accessory olivary nucleus; nh, nucleus of bypo- 

 glossal nerve : nv, nucleus of vagus ; nal, nucleus of glosso-pliaryngeus : 

 r, raphe; 9, glossopharyngeal nerve; 12, Lypogiossal nerve ; y, horizontal 

 fibres. (.Henle.) 



