626 



THE VASCULAR SYSTEMS 



Phrenic nerve. Vertebral artery. 



I \ Inferior thyroi 



//-Jk 



oid artery. 



Vagus nerve. 



Subdavian 

 artery. 



^External jugu- 

 lar vein. 

 Right innomi- 

 nate vein, 

 nnomi- 

 nate artery. 



'Profumia artery. 

 -Musculospiral nerve. 



FIG. 457. The subclavian artery, showing its relations. (From a preparation in the Museum of the Royal 



College of Surgeons of England.) 



PLAN OF THE RELATIONS OF FIRST PORTION OF THE RIGHT SUBCLAVIAN ARTERY. 



In front. 



Skin, superficial fascia. 

 Platysma, deep fascia. 

 Clavicular origin of Sternomastoid. 

 Sternohyoid and Sternothyroid. 



Anterior jugular, internal jugular, and vertebral veins. 

 Vagus and cardiac nerves. 

 Loop from the sympathetic. 



^\ 



Beneath. 



Pleura. 



Recurrent laryngeal nerve. 



Behind. 



Recurrent laryngeal nerve. 

 Sympathetic. 

 Pleura and apex of lung. 

 Longus colli. 

 First thoracic vertebra. 



