PERIPHERAL NERVE TERMINATIONS. 



367 



They are oval bodies and approximately the same 

 size as the corpuscles of Herbst. There is a thin 

 connective-tissue capsule and a loose complex core. 

 One or more medullated nerve fibers enter at the 

 lower end of the corpuscle. These soon become 

 non-medullated and their axones then make a vari- 

 able number of spiral turns which interlace, branch, 

 and are beset with 

 many granules or 

 varicosities. One 

 or more axis cyl- 

 inders occupy the 

 center of the core. 

 5. Genital Cor- 

 puscles. These 

 are oval or round 

 bodies located in 

 the mucosa, just 

 beneath the epi- 

 thelium of male 

 and female geni- 

 talia. Their size 

 varies from o.i 

 mm. to 0.4 mm. 

 They are sur- 

 rounded by a thick fibrous capsule and each cor- 

 puscle is innervated by one to ten medullated nerve 

 fibers. The latter become non-medullated after 

 passing through the capsule, and the axones then 

 form a complex core quite analogous to that of 

 Meissner's corpuscle. In fact, the two are very 

 similar structures. 



Fig. 260. Genital corpuscle from the 

 glans penis of man; methylene-blue stain 

 (Dogiel,"Arch. f. mik. Anat.," vol. XLI.) 



