100 



ESSENTIALS OF PHYSIOLOGY, 



Superior cervical ganglion. 



__,- Cervical sympathetic nerve. 



__- Inferior cervical ganglion. 

 - Subclavian artery. 



Nervi erigentes. 



FIG. 31. Diagram of autonomic nervous system (excluding cranial nerves). 

 Pre-eanszlionic fibres, red : post-cranelionic. black. 



