152 



HEAD AND NECK 



thorax. At the lower margin of the artery the vagus nerve 

 gives off its recurrent branch. 



The cervical dome of the pleura is both below and posterior 



Basilar artery 

 - Vertebral artery 



Vertebral artery 



Vertebral artery 

 5th cervical vertebra 

 Scalenus anterior - 

 Transverse cervical artery - 

 Inferior thyreoid artery ~ 

 Thyreo-cervical trunk - 

 Transverse scapular art. .. 

 Superior inter- 

 costal arte 

 Right common 

 carotid 



Innominate / 



artery / 

 Internal / 



mammary 

 artery 





Deep cervical artery 



Inferior thyreoid artery 

 ,-- Scalenus anterior 

 Transverse cervical 

 artery 



Costo-cervical trunk 

 Transverse 

 "scapular artery 

 Superior intercostal art. 

 Subclavian artery 



Left subclavian 

 - - artery 



Left common 

 carotid 



Internal 



mammary 



artery 



FIG. 56. Diagram of Subclavian Arteries and their 

 branches. 



to the artery, and the recurrent branch of the vagus nerve 

 hooks round below and ascends posterior to it. 1 



On the left side, the first part of the subclavian ascends 

 almost vertically from its origin from the aortic arch, and, 



1 If the lung has been removed by the dissector of the thorax the lower 

 and posterior relations should be verified by examination from the thoracic 

 side. 



