254 HUMAN PHYSIOLOGY 



(2) In the thoracic region 



(a) Cardio-augmentor fibres (from the first thoracic 

 ganglion). 



(b) The splanchnic nerve, which contains sensory 

 nerves for the intestine, and inhibitory nerves for the 

 peristaltic movements. 



All the motor fibres contained in the splanchnic are in- 

 voluntary. The sympathetic fibres are non-medullated. 

 ' v^ 



