VI 



SYMPATHETIC SYSTEM 



371 



1 vert. 



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FIG. 197. Diagram of the nervous elements which make up the sympathetic or splanchnic system. 

 (Baglioni.) R, R', spinal cord ; h.W., dorsal root ; v.W., ventral root ; sp.N., spinal nerve ; r.a., 

 white ramus communicans ; r.g., grey ramus communicans ; G.st., lateral chain ; G.vert., ganglia 

 of lateral chain (vertebral ganglia) ; G.soL, solar ganglion; p.G., peripheral ganglia (terminal); 

 G.mes.inf., inferior mesenteric ganglion ; D, intestine ; B, bladder. The left side of the figure 

 shows the peripheral cutaneous system (At., arterial walls ; Ar., erector muscles of hairs ; 

 dr., gland cells); the right gives the peripheral splanchnic system (At., arterial walls; dr., 

 gland cells ; P, Pacinian corpuscles). The afferent paths and cells are black ; the efferent pre- 

 ganglionic (intra-central), blue ; the efferent post-ganglionic paths and cells, red. 



2 B 1 



