THE AUTONOMIC NERVOUS SYSTEM 



467 



Sup.cerv.g 



Inf. cerv.g 



Abdominal 

 Viscera 



Hypogastricn e|v visc n 



FIG. 237. Diagrammatic representation of the distribution of the sympathetic system. 

 The black lines represent the medullated pre-ganglionic fibres, such as those making 

 up the white rami communicantes, while the post-ganglionic fibres are printed in red. 

 On the extreme right of the figure is indicated the general distribution of the white rami 

 arising from the several nerve roots, while the double brackets point to the nerve 

 roots making up the limb plexuses. H, heart ; s, stomach ; i, small intestine ; c, colon ; 

 B, bladder. 



