LOCALIZATION OF FUNCTION IN THE N'ERVOUS SYSTEM 117 



Peripheral 



Sensory 



TranBinission 



B- 



Olfactory 



Nerve (1) 



Optic 



Nerve (2) 



Auditor>- 



Nerve (b) 

 Cranial Nerves 



(5.7,y & 10) 



Spinal Nerves 

 (Dorsal Roots) 



Central Transmission and Adjustment 



Telencephalon (Olfactory Lobes and Cerebrum) 



Olfactory 

 Center 



I. i^pliralJSprtejc 1 1 



Sensory 



Centers 





Association 1 Motor 

 Centers \ Centers 



J—Ai. 



r 



V 



C I Audi 



"A 



Diencephalon 

 Pain Center 



A 



? - 



Mesencephalon (Optic Lobes) 



^ , 



itory Center , Optic Center , 



^ 



■^ 



Metencephalon (Cerebellum) 



I Equilibratory i Bilateral Muscu-i , 

 C^enter j lar Coordination \y 



I Center 



^ 





(.1 



^ 



/. 



Myelencephalon (Medulla) 



Visceral Control Centers (Respira- i 

 tory movements. Heart rhythm, i 

 Blood Vessels, etc.) 



Spinal Cord 



Peripheral 



Motor 



Transmission 



Cranial 



■^E 



Nerves 

 (3&4) 



Cranial 



Gray Matter 

 ^ 



_ A_ I 



Fiber Tracts (White Matter) 



■^E 



Nerves 

 (5.6.7.9.10 

 11&12) 



Spinal Nerves 

 (Ventral Roots) 



Fig. 63. — Diagram to illustrate some of the possibilities of nervous coordina- 

 tion. No attempt is made to indicate specific reflex arcs. Impulses travel 

 from receptors to central nervous system and thence to effectors as indicated 



bv the lines and arrows. 



A, adjustor neurone; E, effector; li, receptor. 



