EXTERNAL caKOTID ARTERY. 429 



"hyo-glossus and genio-hyoideus muscles ; it is then continued 

 along the side of the fraenum, where it breaks up, its branches 

 being chiefly distributed to the mucous membrane. The sub- 

 lingual gland may be supplied by the submental branch of the 

 lingual. 



The inferior lihial or coronary artery is the first branch 

 given off after the glosso-facial rounds the jaw ; arising near and 

 passing under the depressor labii inferioris, it goes to the under 



Fig. 164. 

 Facial arteries of the left side, a, Maxillo-muscnlar : a', Posterior masseter ; h, c. Posterior auri- 

 cular : d, Anterior branch of it : e, Inferior aurictilar branch ; /, Superficial temporal ; g, Sub- 

 zygomatic ; g', Transverse facial ; g", Masseter ; h, Anterior auricular ; i i, Facial portion of 

 glosso-facial ; k k, Inferior coronary ; I, Superior coronary ; ;», Lateral nasal ; n, Dorsal nasal ; 

 o, Angular artery of the eye. 



lip, supplying the buccinator, depressor labii inferioris, the glands, 

 the cuticle, and buccal membrane, anastomosing with its fellow of 

 the opposite side. 



The superior labial or coronary artery is larger than the 

 inferior. It springs from the trunk, near the infraorbital branch 

 of the superior maxillary nerve, passes under the dilatator naris 

 lateralis and levator labii superioris, anastomosing with the 

 palato-labial branch of the internal maxillary, and supplying 

 twigs to the nasal tissues, upper lip, and buccinator muscle. 



The Maxillo-MUSCULAR artery arises just above where the 

 main trunk passes between the hyoideus magnus and the cornu 



