THORACIC CAVITY 



107 



has a beaded or nodulated appearance on account of the 

 numerous valves which lie in its interior. The terminal 

 valve is usually situated a short distance from the point of 

 entrance of the duct into the left innominate vein. 



vicular head of 

 sterno-mastoid 



jterno-thyreoid 



Phyreoid gland >, 

 Phrenic nerve 



Vagus "'"'^ 



sternal head of 



sterno-mastoid y 



Sterno-hy oid 



Anterior jugular vein 



Clavicular facet on sternum ', 



Left common carotid . '. 

 Left innominate vein 



External jugular vein 

 !^ Platysma reflected with skin 

 5r> Nervus cutaneus colli 



,1 . Internal jugular vein 



Supra-clavicular 

 nerves 



Omo-hyoid 



Transverse cervica 

 vein 



Brachial plexus 



Scalenus anterior 

 Trans, cervical art 

 Trans, scapular ar 

 External jugular \ 

 Subclavius 

 Cephalic vein 

 Axillary vein 



\ First rib 

 \ \ Dome of left pleura 

 \ Thoracic duct 

 ! Internal mammary artery 

 Phrenic nerve 



FIG. 53. Dissection of the Root of the Neck showing the termination 

 of the Thoracic Duct. 



The Right Lymphatic Duct. From the point where the 

 thoracic duct turns from the front to the left of the 

 vertebral column a small lymphatic vessel, which frequently 

 communicates with the thoracic duct, may be traced upwards 

 along the front of the column to the root of the neck, 



