THE SYMPATHETIC SYSTEM OF NERVES. 



1355 



Constitution and General Arrangement. — The sympathetic system serves 

 /o receive, rearrange and distribute the visceral filaments of the cerebro-spinal nerves;, 



Fig. 1 130. 



Common carotid arter>' 

 Vagus nerve 



Superior cervical cardiac 



branch of vagus 



Scalenus anticus 

 Gray ramus communicans to 



VIII. cervical nerve 



m^ 



Xn. thoracic ^angflion 

 Branch to I. lumbar 

 ganglion 



Hyoid bone 



Tnterganglionic cord of sympathetic 



Thyroid cartilage [sympathetic 



Superior cervical cardiac branch o£ 

 Middle cervical ganglion 



Crico-thyroid muscle 



 Inferior cervical ganglion 



- 1, thoracic ganglion 



. Right recurrent laryngeal nerve 



Combined cervical cardiac branches 

 Right vagus [of sympathetic 



Inferior cervical cardiac 



branch of vagus 

 Left middle and inferior cervical 

 cardiacs of sympathetic 



Trachea 



Right bronchus 

 CEsophagus 



Vena azygos 



Great splanchnic nerve 

 Aorta 



Left vagus nerve 



Small splanchnic nerve 

 Least splanchnic nerve 



Diaphragm 



Dissection showing right ganghated cord 01 sympathetic and its branches. 



and to complete, by the interposition of one or more of its especial neurones, the 

 path for the impulses brought by such fibres to the objective organs. It comprises 



