504 



TEXT-BOOK OF EMBRYOLOGY. 



growth of the various branches of these nerves and their connection with the 

 differentiating structures innervated by them. At the same time there is an in- 

 creasing concentration of the cells, thereby forming more definite ganglionic 



Gang, acusticum 



Gang, semilunare n V 



Cerebellum ' N.VI. I 



Vesicula auditiva 



Ga g. radicis n.IX 



Gang, petrosum 



Gang radicis n.X 



N.IIT" 



N.1V 



N. frontal;*"" 



N nasociliaris-'* 



N. mandibularis 

 Gang, geniculatum 

 N. chorda tympani 



Diaphragma'' 

 Hepar .---'' 



I Co. 



N. tibialis-'" 

 N. peroneus" 



Tubus digest. 



/Gang. Froriep 



N. hypoglossus 



L "= JJ.XI. 



Gang, rodos. 



T 1 



N. desc. cerv. 

 "Rami hyoid. 

 (Ansa hypoglossi] 



N. musculocutan, 

 -jN. axillaris 



N. phrenicus 

 N. medianus 



N. radialis 

 N. ulnaris 



-ITh. 



R. posterio 



N. femoralis 

 N. obturatoriua 



R. terminalis lateralis 

 R. terminalis anterior 

 Mesonephros 



Nn. ilioing. et hypogastr. 



FIG. 435. Lateral view of a reconstruction of a 10 mm. human embryo, showing the origin and 

 distribution of the peripheral nerves. The ganglionic masses are represented by darker and 

 the fiber bundles by lighter shading. For purposes of orientation the diaphragm and some 

 of the viscera are shown. The arm and leg are represented by transparent masses into the 

 substance of which the nerve branches may be followed. Streeter. 



