394 



Arteries of the Head. 



lA. meningea media 



I 



A. meningea anterioi 



A. ethmoidalis 



anterior 



A. ethmoidalis 



posterior 



y 



Ramus mastoi- 

 ^,deus a. occipitalis 

 A. occipitalis 



a. nasales posteriores latcrales ^ 

 A. palatina major 



\ . jugularis interna 

 A. anricularis posterior 



(A. temporalis superficialis 

 \ A. auricularis profunda 

 A. tympanica anterior 

 A. meningea media 



niaxillaris interna 



Kamus nieningeus accessorius 



\ 1 M. pterygoideus extcrnus 



' A. alveolaris inferior 



A. canalis pterygoidei [Vidii] 



Kamus mylohyoideus 



spiienopalatina 

 I 

 Aa. palatinae major et minores 



439. Arteries of the skull and of the nasal cavity, 



right half, viewed from within. 

 (The canalis pterygoideus and the eanales palatini have heen partly chiselled open.) 



8. A. luaxillaris interna (see al?o Figs. 438, 440 and 441) (continued): 

 2nd portion: 



d) A. meningea media (middle meningeal artery) bends under the m. pterygoideus externus 



upon its medial surface, ])asses upward to the foramen spinosum and is distributed 

 inside the skull, at first imbedded in the sulci arteriosi of the sphenoid bone and the 

 parietal bone, to the dura mater of the frontal, temporal and parietal region.' Branches : 



da) Ramus meninrjens accessorius goes off outside the skuU, often directly from the 

 a. niaxillaris interna, to the mm pterygoidei, tuba auditiva and its neighborhood. 



db) Ramus petrosus superficialis (0. T. petrosal branch) (see Pig. 442) arises just above 

 the foramen spinosum, runs lateralward and backward to the hiatus canalis facialis 

 and anastomoses there with the a. stylomastoidea (from the a. auricularis posterior). 



dc) A. tympanica superior (see Fig. 442) arises like the preceding branch, goes through 

 the apertura superior canalictdi tympanici and canaliculus tympanicus into the middle 

 ear and ujion the })romontoriuin. 



e) A. masseterica goes lateralward through the incisura mandibulae to the m. masseter. 



