44 TOPOGRAPHICAL ANATOMY OF THE 



are the termination of the jugular veins and the commencement of the 



M. longus colli. 

 Thoracic duct. 



(Esophagus. 

 V. azygos. 



First thoracic nerve. 



Trachea. 



V. costocervicalis. 



N. vagus. 

 Vena cava cranialis. 



N. phrenicus. , 

 Pericardium. 



M. longissimus 

 cervicis. 



A. cervicalis pr 



funda. 

 Eighth cervical 



nerve. 

 Seventh cervical 

 nerve. 



N. vagus et trunc 

 symi)athicus. 



A. carotis 



communis. 



^ A. cervicalis ascendens. 



"A. vertebralis. 

 ^-Truncus omocervicalis. 



A. subclavia. 



A. thoracica externa. 

 A. thoracica interna. 



V. vertebralis. 



Mediastinum. 



Fig. 22.— Dissection of the blood-vessels, &c., of the thorax, as seen from 



the right side. 



cranial vena cava. Lateral to the trunk are the vagus and recurrent 

 nerves. 



