THORACIC CAVITY 



J 35 



and medially, on the anterior aspect of the scalenus anterior, 

 it crosses anterior to the transverse cervical and transverse 

 scapular arteries, and crossing the subclavian artery it 

 terminates in the upper end of the innominate vein, in 



Ij-vicular head off 

 sterno-mastoicl 



Sterno-thyn 



Thyreoid inland i~___ 



Phrenic nerve r 



Vagus 

 Sternal head of 



Sterno-hy 



Anterior jugular vein / 

 Clavicular facet on sternum 'J 



Left common carotid 

 Left innominate vein 



* External jugular vein 



Platysma reflected with skin 

 w Nervus cutaneus colli 



' "\ 



, Internal jugular vein 



Supra-clavicular 

 nerves 



Omo-hyoid 



Transverse cervical 

 vein 



Brachial plexus 



'-. Scalenus anterior 

 Trans, cervical artery 

 Trans, scapular artery 

 External jugular veils 



~ Suhclavius 



"^ Cephalic vein 



, Axillary vein 



-, \ First rib 

 \ > Dome of left pleura 



Thoracic duct 

 ; Internal mammary artery 

 Phrenic nerve 



FIG. 71. Dissection of the Root of the Neck showing the termination 

 of the Thoracic Duct. 



the angle of junction of the internal jugular and sub- 

 clavian veins. Immediately before its termination it receives 

 the left common jugular and subclavian lymphatic trunks, 

 unless they end separately in one or other of the three 

 large veins. When the thoracic duct is distended it has 

 ii 9 6 



