556 



TEXT-BOOK OF PHYSIOLOGY 



ance offered, etc. Degenerative changes of these fibers as observed in 

 tabes dorsalis is followed by a loss of the sense of position. 



The second group of the proprioceptive fibers on entering the cord 



FIG. 229. DIAGRAM OF THE SENSOR PATHWAYS IN THE SPINAL CORD ENLARGED ABOVE BY 

 FIBERS OF THE SENSOR CRANIAL NERVES AND NERVES OF SPECIAL SENSE. 



terminate around the cells in the gray matter known as Clarke's vesicular 

 column on the same side. These are the cells it will be recalled that give 

 origin to the axons which pass outward to the surface of the cord, turn 



