A GENERAL VIEW OF THE NERVOUS SYSTEM 



Olfactory Bulb 



( to which j.s attached 

 the Olfactory Nerve) 



Pituitary Body____^ 



Optic Ne rve 



Optic Chiasma _ 



Oculomotor Nerve-. __ 



Trochlear Nerve 



Trigeminal Nerve- ___ 



Pons Faro/ft- _.__ 



Abducens Nerve- - _ 



Facial Nerve 



Auditory Nerve- _ 



Glossopharyngeal Nerve _ _ 



Vagus Nerve 



Spinal- accessory Nerve 



Hypoglossal Nerve- - 



Medulla Oblongata 



First Spinal Nerve 

 Cerebellum- - 

 Spinal Cord-- 

 Second Spinal Nerve 



Fig. 19. Ventral (anterior) surface of the brain. 



26. The Spinal Cord and Spinal Nerves. The spinal 

 cord is a column of soft nervous matter, filling the long 

 channel in the spinal col- 

 umn (Fig. 18). Thirty- 

 one pairs of nerves arise 

 from the spinal cord, 

 each having two roots, 

 a posterior and an 

 anterior root (Fig. 21). 

 Upon the posterior root, 

 just before it unites with 



the anterior root, is a 



,.,,, , Fig. 20. Side view of brain. 



little knot of nervous 



a cerebrum, b cerebellum. 



matter called a spinal c medulla obiongata. 



