'206 CIRCULATORY SYSTEM. 



canine and incisor teeth; the remainder of the inferior maxiifa- 

 ry artery comes out at the foramen, and supplies the chin, anas- 

 tomosing with the facial artery. 



5. The Arterire Temporales Profundse are two in number. 

 The first of them, called Posterior, arises next to the inferior 

 maxillary. It is concealedbetween the external pterygoid and 

 the temporal muscle for some distance; it then ascends in the 

 posterior part of the temporal fossa, beneath the temporal mus- 

 cle, and is minutely distributed upon it. The Anterior deep 

 temporal artery is separated from the posterior, in its origin 

 from the internal maxillary, by the pterygoid and the buccal 

 arteries. It arises near the pterygo-maxillary fossa; and, as- 

 cending between the temporal* muscle and the fore part of the 

 corresponding fossa, it is minutely distributed upon the former, 

 anastomosing with the posterior deep, and with the middle tem- 

 poral artery. 



6. The Arterias Pterygoideae arise after the posterior deep 

 temporal. They vary considerably in regard to number, size, 

 and origin, and are distributed upon the pterygoid muscles, as 

 their name implies. One of their branches, which is sometimes 

 an independent trunk from the internal maxillary, goes between 

 the posterior margin of the temporal muscle and of the neck of 

 the lower jaw, in front of the latter, to be distributed upon the 

 internal face of the masseter muscle. 



7.^ The Arteria Buccalis, sometimes a branch of the internal 

 maxillary, but frequently coming from one of its trunks, either 

 the alveolar or the anterior temporal, passes along the external 

 face of the upper jaw, and distributes its branches to the bucci- 

 nator and zygomatic muscles, and to the lining membrane of 

 the mouth. 



8. The Arteria Maxillaris Superior, or Alveolaris, proceeds 

 downwards and forwards in winding round the tuber of the 

 upper jaw bone. It first sends some ramifications through the 

 bone to the roots of the great and small molar teeth, and to the 

 lining membrane of the maxillary sinus; it then passes forwards 



