54 



TOPO( GRAPHICAL ANATOMY OF THE 



ramus of the mandible) and tbe first part of its course are now 

 exposed. This part of the vein lies between the mandible and the 

 internal pterygoid muscle, and receives the following vessels: — 



A. auricularis 

 posterior.. 



M. juguloman- 

 dibularis, 

 A. masseterica 



A. occipitalis.. 



A. carotis 



externa." 



N. accessorius.- 



N. vagus.. 



N. hypoglossus.. 



A. carotis 



communis.. 



M. digastricus.. 



M. stylohyoideus.. 



N. laryngeus 



cranialis. 



M. crico- 

 pharyngeus.. 



A. thyreoidea 



cranialis. 



M. crico 



thyreoideus 



M. sterno- 



thyreoideus. 



.^ X. facialis. 



\^N_ A. temporalis 



"^ superficialis. 



■(x '"A. maxillaris 



U interna. 



ilk 



' '"■ ^ '' Diverticulum of 



Eustachian tube. 



■ . — ^ _":::._ Hyoid bone. 

 XX A. palatina 



XX^ ascendens. 



■^g* — ^^- ^;x---^I• palatopharyngeus. 



■^^ ^ \ >^ -^ glossopharyngeus. 



\\^^ ''. ^\ ' ^ V. buccinatoria. 

 ^^ir'- y-=~Cx_ — A. maxillaris 

 VI I \!i externa. 



' "^v\ — ^"^N '■ — ^~ "^" li"S"alis. 



J^J^ X X. lingualis. 



y-nV :^V M. hyoglossus. 



''\ xvv^ — "" — \~ -^ • hypoglossus. 



> \ \\\ : ^- M. styloglossus. 



^ ^W Submaxillary 



duct. 

 A. sublingualis. 



AT. digastricus. 

 i . mylohyoideus. 



M. chondropharyngeus. 



M. omohyoideus. 



Fig. 18. — Diverticulum of the auditory (Kustachian) tulje and lateral aspect of the pharynx. 

 (1) V. dorsalis linguce. — The dorsal lingual vein drains the mucous 

 membrane and the adjacent muscles of the posterior part of the 

 dorsum of the tongue, and receives tributaries from the soft palate. 



