BLOOD-VESSELS OP THE HEAD. 



429 



INTERNAL MAXILLARY, (Fig. 121.) 



Tympanic branch. 



Greater or middle meningeal. 



Less meningeal. 



Inferior dental, or maxillary. 



Posterior deep temporal. 



Masseteric* 



Pterygoid. 



Buccal. 



Anterior deep temporal. 



Superior dental, or alveolar. 



Inferior orbitar. 



Superior palatine. 



Superior pharyngeal. 



Spheno-palatine. 



Lateralis nasi. 



Angularis, or terminating branch. 



INFERIOR OR ASCENDING PHARYNGEAL. 



Pharyngeal branches. 

 Posterior meningeal. 



OCCIPITAL. 

 Inferior meningeal. 

 Princeps cervicis. 



POSTERIOR AURICULAR. 



Stylo-mastoid. 



TEMPORAL. 



Anterior auricular. 

 Transverse facial. 

 Middle temporal. 

 Anterior temporal. 

 Posterior temporal. 



The superior thyroid is the first branch of the external 

 carotid, and descends to be distributed principally to the 

 FIG. 121. thyroid gland. As it is con- 



nected with the neck, we defer 

 any further notice of it till 

 that part of the body comes 

 under examination. 



The lingual artery arises just 

 above the latter, and passes 

 inward above the os-hyoides 

 to the base of the tongue. It 

 is covered at its origin by 

 the digastric and stylo-liyoid 

 muscles, and at the base of the 

 tongue lies between the hyo-glossi and genio-hyo-glossi, 

 whence it runs forward to the tip. 



FIG. 121 represents the branches of the Internal Maxillary Artery. 1 Ex- 

 ternal carotid. 2 Trunk of transverse facial. 3 4 Terminal branches of 

 external carotid. 3 The temporal. 4 Internal maxillary artery the first 

 part of its course extending to the first arrow. 5 Pterygoid, or second part of 

 its course between the two arrows. 6 Pterygo maxillary, or terminating por- 

 tion. The branches belonging to these three divisions are, 7 A tympanic 

 branch. 8 Greater meningeal. 9 Lesser meningeal. 10 Inferior dental. Th 

 second division are muscular branches, as the temporal, masseteric, pterygoid 

 and buccal. 11 Superior dental. 12 Infra orbital. 13 Posterior palatine. 

 14 Spheno palatine, or nasal. 15 Pterygo palatine. 16 Pterygoid, or Vidian. 



