2O6 



HEAD AND NECK 



pierce the mylo-hyoid muscle. It anastomoses, in the face, 

 with the inferior labial branches of the external maxillary 

 and the mental branch of the inferior alveolar. 



Vena Facialis Anterior. The cervical portion of the 

 anterior facial vein has already been seen (p. 130) passing 

 backwards and downwards, superficial to the submaxillary 



Superficial 

 temporal artery 

 Internal maxil- 

 lary artery 



Posterior auricu- 

 lar artery 



External carotid 



Occipital artery 



Sterno-mastoid artery 



Hypoglossal nerve 

 Ascending pharyngeal artery 



Internal carotid artery 

 Descendens hypoglossi 



Superior thyreoid artery 

 Sterno-mastoid artery 



Submental 



artery 



External maxillary 

 artery 



Hyoid bone 



Lingual artery 

 Inferior hyoid artery 



Internal laryngeal artery 

 Prominentia laryngea 



Sterno-hyoid 



Common carotid artery 



Omo-hyoid 



FIG. 75. Diagram of the External Carotid Artery and its Branches. 

 The right half of the mandible is tilted up. 



gland. After receiving tributaries corresponding to the 

 branches of the corresponding part of the external maxillary 

 artery, it joins the posterior facial vein. The short trunk 

 thus formed is termed the common facial vein, and it pours its 

 blood into the internal jugular at the level of the hyoid bone. 

 Arteria Occipitalis. The occipital artery springs from the 

 posterior aspect of the external carotid artery, at the same level 

 as the external maxillary. It takes the lower border of the 

 posterior belly of the digastric muscle as its guide, and runs 



