260 



BLOOD-VESSEL OF THE TEETH. 



FlG - 73t A The external gives off 



several branches. The in- 

 ternal maxillary, however, 

 is the only one claiming 

 attention in the present 

 place. To expose this ves- 

 sel, the zygomatic arch 

 should be sawn through 

 at each end, and turned 

 down. The temporal mus- 

 cle is to be divided at its 

 insertion into the coronoid 

 process, and turned up. 

 The ramus of the jaw di- 

 vided in its middle, disar- 

 ticulated and removed, the 

 vessel is now brought to 

 view. 



It will be seen to com- 

 mence in the substance of 

 the parotid gland, near the 

 meatus externus, to pass 

 obliquely forwards behind 

 the neck of the lower jaw; 

 then between the two pter- 

 yyoid muscles, 

 often winding 

 round the out- 

 er surface of 

 the external 

 pterygoid at 

 its origin. 

 From this it 



proceeds to the tuberosity of the superior maxilla, and 

 finally bends down into the pterygo maxillary fossa, to 



FIG. 73, A represents the arteries supplying one side of the face and mouth. 

 1 1 External carotid artery. 2 Inferior maxilla with its exterior wall re- 

 moved, so as to expose the inferior dental artery, and roots of the teeth. 



