

NERVOUS SYSTEM. 101 



fer much from the pain of the organs of animal life. There 

 is like difference in convulsive actions of animal and or- 

 ganic life. 



Q. Is the ganglionic system developed as early as the 

 brain? 



/!?. By no means. The ganglions, when first develop- 

 ed, are not as soft as the foetal brain. 



Q. What pathological inference is deducible from the 

 earlier development of the cerebral organ? 



#. That diseases of the animal nervous system prevail 

 in infancy, from the early development of that system. 



Q. Does the connexion of the nerve with the ganglion 

 resemble that of the nerves with the brain? 



t/?. The nerves are more firmly united to the ganglions 

 than the cerebral nerves are to the brain. The nerves of 

 organic life differ much more from the ganglion than the 

 cerebral nerve does from the brain. 



Q. What do you mean by cerebral ganglions? 



Ji. An enlargement of the spinal nerves at their exit 

 from the spine; their organization resembles the organic 

 ganglions, but they differ in sensibility. For example, if 

 the superior or inferior cervical ganglion be irritated, the 

 muscles supplied by them remain unaffected: irritate a ce- 

 rebral ganglion, and behold the convulsions which will be 

 excited. 



Of the Nerves of Organic Life. 



Q. What is the course of the organic nerves? 



*/l. They communicate with the nerves of animal life; 

 then each ganglion sends nerves to the next ganglion, with 

 one exception; some nerves go to the cerebral muscles, the 



