112 NON-SPECIFIC OR GENERAL DISEASES 



trinik. The sensory root possesses a ganglion from whicli it 

 originates. 



Generally speaking, the cerebrospinal system deals with the 

 special senses, movement of skeletal or voluntary muscles and 

 cutaneous and muscular sensations. In addition to the above 

 there is a distinct system termed the sympathetic. The sympa- 

 thetic system consists of a long cord, studded with ganglia, ex- 

 tending from the base of the neck to the sacrum. The ganglia 

 are connected with the inferior roots of the spinal nerves. This 



Fia. 26. Fig. 27. 



Fig. 26. — Unilateral facial paralysis caused by injury to seventh cranial nerve; note position 



of lip. 

 Fig. 27. — Bilateral facial paralysis. This colt was affected with facial paralysis when born. 



cord is connected with groups of ganglia and nerve fibres in the 

 abdominal region, and this in turn is connected with terminal 

 ganglia in distant tissues. This system of nerves is distributed 

 to the vital organs of the body. 



Congestion and Anaemia of the Brain. — In congestion of the 

 brain, the blood-vessels distributed to the nerve tissue become 

 engorged with blood. It may be either active or passive. 



The cause of ancvmia of the brain is an insufficient blood 

 supply. This may be due to an abundant hemorrhage and car- 

 diac weakness caused by shock or organic heart disease. 



