INNERVATION OF THE TURTLE S HEART 



75 



Specimen B 



Sympathetic ganglia 



Sympathetic 

 nerve 



- vagus 



nerve 



-SympaMef/c 

 qanqlia 



Testudo qraeca Specimen A 



Fig. 70. Schematic representation of the vagus and sympathetic nerves in a turtle 

 (testudo graeca). (Modified from Gaskell.) Variations in the arrangement of the 

 sympathetic fibers were frequently found by Gaskell. (The writer has seen no instance 

 in which the arrangement and connections of the sympathetic fibers existed as shown in 

 this illustration, but the general plan of distribution appears to be approximately the 

 same in all specimens. ) 



