Cranial Nerves. 



137 



Lig. spirale 



Ganglia 



in the Canal, gan- 

 glionar. 



Membr. Reissneri 



Scald vestib. 



Scala media 

 Scala tympani 



N. COCHLEAE 



481. Section of the Cochlea, with the Expansion 



of the NerVHS Cochleae. After Rudinger. 



The auditory nerves, Nervi acustici, form the eighth p a i r 

 of cranial nerves. The nerve appears on both sides between Flocculus 

 and Pedunculus cerebetti, together with the facial nerve, for which it forms 

 a groove. Both nerves enter the internal auditory meatus ; the facial nerve 

 passes to the Aquaeductus Fattopiae ; the auditory nerve divides into two 

 branches, the larger cochlear branch, N. cochleae, and the smaller 

 vestibular branch, N. vestibuli. The former passes forwards through 

 the foramina of the Tractus foraminulentus to the Lamina spiralis, and 

 ends in the organ of Corti; the latter divides into several branches, 

 which pass to- the Sacculus spliaericus , Sacculus dlipticus and the three 

 ampullae of the semicircular canals (see Fig. 325). 



