Arteries of the Head. 



A. ethmoidalis posterior 



395 



A. ethmoidalis 

 anterior 



Aa. nasales posteriores septi 



Anastomosis with the a. palatina major in the canalis incisivus 



440. Arteries of the nasal septum, viewed from the left. 



8. A. maxillaris interna (see also Figs. 438, 439 and 441) (continued). 



f) Aa. temporales "profuadae posterior et anterior (posterior and anterior deep temporal 



arteries) upward in the ni. temporalis, the posterior close upon the squama temporalis, 

 the anterior upon the ala magna ossis sphenoidalis. 



g) Rami pterygoidei, vaiying in number, often from f) or h), to the mm. pteiygoidei. 



h) A. huccinatoria (0. T. buccal branch), .downward and forward to the m. buccinator, for 

 muscles of the face, mucous membrane of the mouth and gums of the upper jaw. 



i) A. alveolaris superior posterior (posterior dental or alveolar branch) arises near the fossa 

 pteiTgopalatina, forward and downward, passes through the foramina alveolaria maxillae 

 in fhe canales alveolares to the sinus maxillaris, upper molar teeth and their giuns. 

 3rd portion: 



k) A. infraoj-bitalis , forward through the fissura orbitalis inf. to the sulcus and canalis 

 infi-aorbitalis, gives off branches to the orbital contents, and also the aa. alveolares su- 

 pe?-iores anteriores (0. T. anterior dental branch) in the canales alveolares to the anterior 

 teeth and theii- gums : terminal branches through the foramen infraorbitale to the face. 



1) A. palatina descendens (0. T. posterior or descending palatine branch) passes downward 

 to the canalis pterygopalatinus. Above it gives off the a. canalis pterygoidei [ Vidii] 

 (0. T. Vidian artery) which goes through the canalis pterygoideus backward to the roof 

 of the phar}-nx. Below it divides into the aa. palatinae minores et major, which 

 run through the canales palatini and emerge from the foramina palatina minora et 

 majus ; the minor branches go to the soft palate and its surroundings, the major branch 

 goes to the inferior surface of the hard palate as far forward as the gums, 

 m) A. sphenopalatina (0. T. sphenopalatine or nasopalatine artery) , thi'ough the foramen 

 sphenopalatinum mto the nose; it supplies the lateral wall of the nose and the pharjTix 

 by means of the aa. nasales posteriores laterales, runs at the inferior surface of the 

 body of the sphenoid to the nasal septum and breaks up into the aa. nasales poste- 

 riores septi which anastomose in the canalis incisivus with the a. palatina major. 



9. A. pharyngea ascendens (ascending phaiyngeal arteiw) (see Figs. 441 and 442) from 

 the posterior surface, near the a. lingualis. ascends, at first between the a. carotis externa 

 and interna, then in front of the latter between it and the lateral wall of the pharynx, medial 

 from the mm. styloglossus and stylophar\T]geus , as far as the base of the skull. Branches: 



a) Rami pharyngei, 2 3. partly descending, partly ascending, to the pharynx and palate. 



