120 



THM HORSE IN HT<:ALTIT AND DISEASE 



THE ORGANS OF INNERVATION 



"riic organs cdiiipi'l^iim, tlir iicr\'i)\is system may be arranged 

 under: ( 1 ) The crnlral /(r/-/v)/(.\ sijslciii , whicli includes the brain and 

 spinal cord; (2) the peri i)livral nervous system, which comprises the 



Langiltidinal 



Olfurtory bidb 



I ruidul pole of III misphne 



Transverse Ji^^iire 



OrcipUal pole of 

 In /ntsjjktre 



rfhiUurn 



' liiilla obhingaia 



Fin. -10. — D(.>r-al view ol' Iiniin. (Sis.-^uii, Anatomy of ])i)inoj<tio Aiiiiiiats.) 



cerebral and spinal nerves with their ganglia; (3) the syinpalhetk 

 iHTfons .^listen). 



ddie brain is the chief organ of the central nervous system (Fig. 

 ■iOj. It is located in the cranial cavity, and is composed of the 



