1034 



THE NERVOUS SYSTEM 



Fig 787.— Showing the Sympathetic Trunks in their Relation to the Vertebral 

 Column TO the Spinal Nerves, and to each Other. (Modified from Toldt "Atlas of 

 Human Anatomy," Rebman, London and New York.) ' 



Cavernous plexus 

 Internal carotid plexus.. 



Internal carotid nerve 

 Jugular nerve'. 



Vagus"" 

 Superior cervical ganglion 



Cervical plexus 



Cervical portion of sympathetic trunk •-. 

 Superior cardiac nerve-- - 

 Rami communicantes — 

 Middle cervical ganglion 



Brachial plexus --■ 

 Inferior cervical ganglion ' 

 .First thoracic ganglion' 



Ansa subclavia (Vieussenii).-- 



Inferior cardiac nerve--' ) 



Superior and middle cardiac , 

 nerves ' 



Pulmonary branches •' 

 Twigs to aortic plexus , V^ 

 Splanchnic ganglion-^. 



Last thoracic ganglion.-.. \^ \ 



Splanchnic minor nerve.. 

 Medial part of lumbo-. 

 costal arch 

 Lateral part of lumbo-costal arch-- 

 Psoas major-- 



Second lumbar nerve ■/: 



■"'^ 

 Twelfth intercostal nerve-'''" 



Lumbar plexus' 



Rami communicantes --. 



Lumbo-sacral trunk- 



Rami communicantes .U' 



Sacral plexus 



Coccygeal nerve-- 



\^ Glossopharyngeus 

 ,. Jugular nerve 



Pharyngeal plexus 

 ~ Pharyngeal branches 

 •«Vagus 



External carotid nerves 



.••Inferior thyreoid plexus 

 Vertebral plexus 



Subclavian plexus 

 Rami communicantes 



— Thoracic portion of 



sympathetic trunk 



•••.Thoracic ganglia 

 -Intercostal nerves 



, "Greater splanchnic nerve 



JL— ..Lesser splanchnic nerve 



■I 



_'* -Thoracic aortic plexus 



...Lesser splanchnic nerve 



^ Greater splanchnic nerve 



^, '"^ 'Branches to phrenic plexus 



Branches to coeliac ganglia 



'"""Rami communicantes 



Lumbar portion of sympathetic 

 trunk 



^ Branches to abdominal 



aortic plexus 



., Branches to hypogastric 

 plexus 



^. Fifth lumbar ganglion 



.. Commissural branches 

 --First sacral ganglion 



—-"Sacral portion of sympathetic 

 trunk 



'"•»Rami communicantes 

 Ganglion coccygeum impar 



{ 



