Chap. XIXl 



SUMMARY 



405 



Collateral 

 Ganglia 



Located principally in thoracic and abdominal cavities. 



(With spinal nerves. 

 With vertebral ganglia. 

 With viscera. 

 (Cardiac plexus. 

 Solar plexus. 

 Hypogastric or pelvic plexus. 



Terminal f Located on walls of organs themselves. 

 Ganglia \ Connected with collateral ganglia. 



Sympathetic Ganglia are found in the medulla, spinal canal, and in connec- 

 tion with some of the cranial nerves. 



Con- 

 nected 



Form 



Distribu- 

 tion of 

 Sympa- 

 thetic 

 Nerves 



Spinal 

 Cord 



To the heart. 



To the involuntary muscles of the blood-vessels, Ijnuphatics, 



and viscera. 

 To the secretory glands. 

 To some of the special senses. 



Located in spinal canal. 



Extends from foramen magnum to second lumbar vertebra, 

 16-17 in. long. 



( Dura mater (outer). 

 Meninges < Arachnoid (middle). 



I Pia mater (inner) . 



' Gray matter in form of butterfly. 



(Sensory. 

 Motor. 

 Mixed, 

 f Anterior divides front portion in lateral halves. 

 1 Posterior — divides back portion in lateral halves. 

 Isthmus — connects lateral halves. 

 Canal — centre of isthmus. 



1. Conduction. 



2. Reflex action. 



3. Automatism. 



4. Inhibition. 

 5- Transference. 



Consists of 



Fissures 



Functions 



