CHAPTER XIX. 



THE ORGANS OF THE SPECIAL SENSES. 



1. Touch. — The nervous filaments distributed among the cells 

 of stratified epithelium have already been depicted in Fig. 99. 

 Similar filaments occur in the human epidermis, and it is probable 

 that some of them are the teledendrites of spinal ganglion-cells, 

 while others are centrifugal teleneurites subserving the functions 



Fig. 249. 



Fig. 250. 



a 



Tactile corpuscles. 



Fig. 249.— Meissner's corpuscle, from the human corium. iBohm and Davidoff.) a, upper 

 portion, in which the epithelial cells alone are represented. The nuclei of those cells 

 are in the broader peripheral portion of the cytoplasm ; 6, nerve-dendrite coiled about 

 the epithelial cells ; c, nerve-fibre. 



Fig. 250.— Krause's corpuscle, from the human conjunctiva. (Dogiel.) a, endothelial 

 envelope; b, nucleus of connective-tissue cell within the fibrous capsule ; c, nerve-fibre. 



of nutrition, etc., or the teledendrons of neurons belonging to other 

 than the spinal system of nerves. 



Besides these nervous terminations the skin possesses certain 

 bodies, which are called " tactile corpuscles" and "Pacinian bodies." 



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