158 



HEAD AND NECK 



arches laterally and forwards, and then downwards, above 

 the apex of the pleura, and it enters the innominate vein in the 

 angle of the union of the internal jugular vein with the 



External jugular vein 



k Platysma reflected with skin 



iff* Nervus cutaneus colli 



Internal jugular vein 



Supra-clavicular 

 nerves 



M. omohyoideus 



Transverse cervi< 

 vein 



Brachial plexus 



Scalenus anterioi 

 Trans, cervical a 

 Trans, scapular i 

 External jugular 

 Subclavius 

 Cephalic vein 

 Axillary vein 



Anterior jugular vein 

 Clavicular facet on sternum , 



Left common carotid 



Left innominate vein 



First rib 

 \ ' Dome of left pleura 

 1 Thoracic duct 

 I Internal mammary artery 

 Phrenic nerve 



FIG. 57. Deep Dissection of the Root of the Neck on the Left Side to show 

 the Dome of the Pleura and the relations of the Terminal Part of the 

 Thoracic Duct. Parts of the sterno-mastoid and the sterno-thyreoid 

 have been removed. 



subclavian. As the thoracic duct courses laterally it lies at 

 a higher level than the subclavian artery, and passes posterior to 

 the common carotid artery, the vagus nerve, and the internal 

 jugular vein ; and anterior to the vertebral artery and vein 

 and the thyreo-cervical trunk or its inferior thyreoid branch ; 



