1006 



SURGICAL ANATOMY OF THE ARTERIES. 



ficial structures have been divided, assistance will be derived from the 

 trachea or the larynx, as well as from the pulsation, in determining the 

 exact situation of the artery. The trachea, from its roughness, may be 



Fig. 698. 



Fig. 698. VIEW OP THE RIGHT COMMON CAF.OTID AND SUBCLAVIAN ARTERIES, WITH 

 THE ORIGIN OF THEIR BRANCHES AND THEIR RELATIONS (from R. Quain). ^ 



e, front of the hyoid bone ; /, thyroid cartilage ; g, isthmus of the thyroid gland ; 7i, 

 the trachea above the inter-clavicular notch of the sternum ; i, i\ the sawn ends of the 

 clavicle, the portion between them having been removed ; &, the first rib ; in, sealemis 

 medius; p, on the longus colli muscle, pointing to the pneumogastric nerve; IV, the 

 uppermost of the nerves of the axillary plexus ; A, the innominate artery ; 1, right 

 common carotid artery ; 1', placed on the left sterno-thyroid muscle, points to a part of 

 the left common carotid ; 2, internal carotid ; 2', upper part of the internal jugular vein, 

 which has been removed between i, and 2' ; 3, and 4, external carotid ; 3, is placed at 

 the origin of the superior thyroid artery ; 4, at that of the lingual ; 5, the superior 

 thyroid artery ; 5', the thyroid or glandular branch ; 8, the first part, 8', the third part 

 of the arch of the subclavian artery ; 8", the subclavian vein separated from the artery 

 by the scalenus anticus muscle; 9, is placed on the scalenus anticus rauscle in the angle 

 between the transversalis colli and suprascapular branches of the thyroid axis; 10, 



