152 THE POCKET ANATOMY 



At exit from foramen, with pneumogastric, glosso-pharyngeal, 

 carotid plexus, great auricular, auriculo-temporal. 



On the face, with the three divisions on the $th. 



Branches within the Aqueduct : 



Communicating from the geniculate ganglion tc the audi- 

 tory. 



Large superficial petrosal passes from geniculate ganglion 

 through hiatus Fallopii, then through foramen lacerum 

 medium to Vidian canal, where it joins the large deep pe- 

 trosal to form the Vidian nerve (vide p. 146). 



Communicating with the small superficial petrosal nerve 

 (vide pp. 148 and 154). 



External superficial petrosal : from geniculate ganglion to 

 plexus on middle meningeal artery. 



Tympanic : to the stapedius. 



Chorda tympani : given off just before exit from stylo- 

 mastoid foramen, ascends to tympanum through iter chorda 

 posterius; it courses then between membrana tympani and 

 base of pyramid, and between handle of malleus and long 

 process of incus ; it leaves tympanum by iter chorda anterius, 

 and, passing through Huguier's canal, emerges at the inner 

 end of the Glaserian fissure, then forwards between two 

 pterygoids to join gustatory or lingual. It forms the sensory 

 root of submaxillary ganglion, and ends in the tongue. 



Communicating with the auricular branch (Arnold's nerve) 

 of the pneumogastric. 



Branches given off at exit from Foramen : 



Posterior auricular : passes up behind and between mastoid 

 process and meatus, dividing into auricular to supply retrahens 

 and attollens aurem, and occipital to posterior belly of occipito- 

 frontalis; communicates with auricular of pneumogastric, 

 great auricular, and small occipital. 



Stylo-hyoid : to muscle. 



Digastric : given off with former to supply posterior belly 

 of digastric, communicates with glosso-pharyngeal. 



Branches on the Face : 



Divides near ramus of inferior maxilla into temporo-facial 

 and cervico-facial. 



The TEMPORO-FACIAL crosses over external carotid and 

 temporo-maxillary vein, communicating with auriculo-tem- 

 poral and supplying pinna. 



Branches of the Temporo-facial : 



Temporal : supply attrahens aurem, joining temporal of 

 superior maxillary and auriculo-temporal of inferior maxil- 

 lary ; anterior branches supply orbicularis palpebrarum and 



