THE SPINAL NERVES 



Nerve Endings in the Hair-follicles. It has long been known that the hairs 

 are delicate tactile organs. The hair-clad parts lose much of their responsive- 



Fig. 47. Neuromuscular nerve end-organ from a dog. The figure shows the intrafusal 

 muscle-fibers, the nerve-fibers and their terminations, but not the capsule nor the sheath of Henle. 

 Methylene-blue stain. (Huber and De Witt.) 



ness to touch when the hair is removed. As would be expected on these grounds, 

 the hair-follicles are richly supplied with nerve endings. Just below the open- 

 ing of the sebaceous gland into the follicle myelinated nerve-fibers enter it, los- 



