THE ANIMAL MACHINE 



11 



peripheral, made up of the nerve trunks and their nerve 

 endings, which are distributed, in a most general way, to 

 all parts. Nerve tissue has the property of conveying or 

 transmitting impulses to or from the central station or 

 brain, those impulses emanating from the centers and 



Fig. 5. — Section of portion of a nerve trunlv, including three bundles 

 of individual nerve fibers surrounded by the perineurium (p) ; the 

 bundles, together with the blood vessels and adipose tissue, are united 

 by the more general epineurium (e) ; the sections of the individual 

 nerve fibers are held in place by the endoneurium ; fat cells near 

 which are the sections of blood vessels (/). 



directed to the general muscular system traversing the 

 so-called motor trunks, while those impulses which origi- 

 nate in the peripheral endings and are conveyed to the 

 brain travel along the sensory nerves (Fig. 5) . 



Anatomy 



11. The skeleton. — The foundation of the structure 

 of the quadruped is the bony skeleton, divided, for con- 



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