232 



INTRODUCTION TO NEUROLOGY 



Sphincter of iris ) 

 Ciliary muscle / 



Heart, blood-vessels of mucous mem-") 

 branes of bead, salivary glands, walls of i 

 digestive tract from mouth to descending I 

 colon, including outgrowths of this re- f 

 gion trachea and lungs, gastric glands, | 

 fiver, pancreas. 



Dilator of iris, orbital muscles, arteries, 

 muscles and glands of the skin, blood- 

 vessels of lungs and abdominal viscera and 

 of digestive tract between mouth and rec- 

 tum, arteries of skeletal muscles, muscles 

 of spleen, ureter, and internal generative 

 organs. 



Arteries of rectum, anus, and external | 

 generative organs, muscles of external gen- I 

 erative organs, walls of bladder and I 

 urethra, walls of descending colon to anus, j 



Midbrain sympathetic 



Bulbar sympathetic 



/Thoracic-lumbar sympathetic 

 1 1 thoracic to II or III lumbar 



/Sacral sympathetic 

 \II to IV sacral 



Fig. 111. Diagram of the central localization of the cerebro-spinal visceral 

 nervous connections. (Modified from Langley.) 



