Medulla 



oblongata 

 N.XI 



N.I 



Postganglionic fibers 



are dotted thus 



Accessory n. 

 hi trapezium 



Spinal 

 medulla 

 (cord) 



Kami 



communican- 

 tes going to 

 5ymp. gang, 

 (preqanglionic) 

 Ansa 



subclavia 

 (Annulus of 

 Vieussens)r 



Thoracic 3 

 nerves 



Electrodes 

 (Acceleration, or 



augmentation of heart.) 



N.IX. 

 f . /\ 



-Juqular ganglion (Cang. of the root) 



Depressor (Fall in pressure or slowing of heart.) 

 (Sensory) separate nerve in rabbit and opossum 



Nodosum ganglion (Gang, of the trunk) * Hunf 

 Inhibitory cranial autonomic fibers 



Harrington) 



Superior cervical ganglion 

 Descending sympathetic fibers in cord 

 Cervical vago- sympathetic trunk 



^Electrodes (slowing or stoppage of 

 5ubclavian heart. Augmentation in some 



animals.) 

 Aortic arch 



Inferior 

 cervical 

 gang 



First thoracic gang/ion 

 (Stellate) 



Fig. 147. Schematic representation of the innervation of the heart. 



