262 



PRACTICAL ANATOMY. 



preside over the special senses and supply muscles with motion and skin and 

 membranes with sensation. These muscles and parts, constituting so much of 

 the bulk of the body, depend on certain organs for air, blood, for the products 

 of digestion ; in other words, there are certain organs in the body concerned in 

 the preparation of nutriment for the tissues. This nutriment must be distributed 



to G.ofRoot ofPneumoy. 

 taPetrosal G.of^ ' 

 Gbrsm-pfi 



x 

 targe S.Pttrosal 7f> 



^6> br.ofxt. Carotid. A. 

 - ^. 

 , iaPfuirynffeal P. 



to Inf. Thyroid A . 



6.' GANGLION. 



Cardiac or.fhPneumaaastric p.. PLEXUS. 

 andRic.Larynatul Kervrs A.. ARTERY. 



J.2.3.4. BRANCHES. 

 FROM PNEUMOGASTRiC 

 H / far.- L NERVE TO THE CAHOIAC 



\G.ofWrisbtrg PLE xus. 



Cardiac Plexus 

 .Coronary Pltxua 



S Sup.Ifemorrhoidal. 

 6 Spermatic Plexus. 



Pelvicp.orlnfHypogaslric. 



^SUPPLIES ALL THE PELVIC VISCERA AND THE PENIS. 



\X N ^C 



Ganglion Impar. 



Iromfbttirs Compend. of Anatomy. 

 FIG. 184. THE SYMPATHETIC SYSTEM OF NERVES. 



to the tissues, at times in maximal quantities, at other times in minimal quantities. 

 The action of the sympathetic is, among other things, to -dilate or contract the 

 vessels bearing this blood, for the nutrition of the tissues. In this sense then 

 a feeder of organs, the sympathetic looks after the lives of organs hence its 

 synonym, the nerve of organic life. 



