84 



DISSECTION OF THE NECK. 



it afterwards becomes superficial to that vessel ; and its direction is some- 

 what arched forwards, though the position would be marked suHicieiitly 

 by a line from the front of the mcatiis of the car to the rriroid cartilage. 



At first the external carotid is overlaid by the sterno-mastoideus, and 

 by the common coverings of the anterior triangular space, vi/., the skin, 

 and the superficial and deep fascia with the platysma. But above the 



Fig. 17. 



EXTERNAL CAROTID AND ITS SUPERFICIAL BRANCHES (" Anatomy of the Arteries," Quain). 



a. Common carotid. 



b. Internal jugular vein. 



c. Internal carotid. 



d. External carotid. 



e. Upper thyroid branch. 

 /. Lingual. 



g. Facial. 



h. Internal maxillary. 



i. Superficial temporal. 



m. Supra-orbital. 



n. External nasal. 



o. Angular branch of facial. 



p. Lateral nasal. 



r. Superior coronary. 



8. Inferior coronary. 



t. Inferior labial. 



u. Submeutal artery. 



level of a line from the mastoid process to the hyoid bone, the artery is 

 crossed by the digastric and stylo-hyoid muscles, and still higher the parotid 

 gland conceals it. At its beginning the artery rests against the pharynx ; 

 but above the angle of the jaw it is placed over the styloid process and 

 stylo-pharyngeus muscle, which separates it from the internal carotid. To 

 the inner side of the vessel at first is the pharynx ; and still higher, are 

 the ramus of the jaw and the stylo-maxillary ligament. 



