40 



TOPOGRAPHICAL ANATOMY OF THE 



A. transversa colli 

 Second rib. i 



A. intercostalis suprema. 



First thoracic sympathetic ganglion. ,' ,' 



A. cervicalis profunda. 

 First thoracic ner\ e. 



Eighth cervical nerve. 

 A. vertebralis. 



M. longissimus cervicis. 



Seventh cervical 



(Esophagus. 



M. scalenus. - 



A. carotis- 

 communis sinistra. 

 N. vagus et n. - 

 sympathicus. 



V. jugularis' 



sinistra. 



A. cervicalis ascendens."^ 

 'Truncus omocervicalis. ^^ 



A. transversa scapulae.'' 

 A. subclavia sinistra. ' 

 A. thoracica«externa. / 



A. thoracica interna.^ 



V. costocervicalis. 



, M. longus colli. 



CEsophagus. 



Thoracic duct. 



Aorta. 



S Trachea. 

 _N. vagus. 

 . Truncus 



brachiocephalicus. 

 "N. recurrens. 



Cardiac nerve. 



^N. phrenicus. 



Pericardium. 



Mediastinum. 



FlQ. 20. — Dissection of the vessels and nerves in the region of the entrance to the 



thorax, seen from the left. 



