- 著者
- 山田 勝義
- 出版者
- Tohoku University Medical Press
- 雑誌
- The Tohoku Journal of Experimental Medicine (ISSN:00408727)
- 巻号頁・発行日
- vol.54, no.2, pp.163-174, 1951-06-25 (Released:2008-11-28)
- 参考文献数
- 12
- 被引用文献数
- 7 12
The sensory terminations in clitoris in adult show remarkable develop-ment, compared with those in the embryo of 10th month, but with a exception of the intraepithelial fibres which exist no more even in the common epithelium remained in the radix clitoridis. Such a special corpusclar termination as having a swelling inner bulb in the embryo seems to beloiig to a Pacinian corpuscle, because it show in adult in its periphery the formation of some of lamellae. The corpusclar terminations except the Pacinian corpuscles in the external genitals in adult have long included Krause's end bulbs, Krause's genital bodies and Meissner's tactile bodies. But there is no essential difference between both of the formers. And the existence of the latters is denied too. The morphological difference of these bodies consists in the conditions of the arrangement of the sensory nerve fibres and special nuclei in the inner bulb. These terminal bodies are divided into 3 types. But, as they have morphologically more or less similarities, they should be called collectively the genital nerve bodies. Each termination of the type 1 and 2 has remarkable inner bulb, which is showed as a synchytium consisting of fine granular substance and special nuclei and considered to be of peripheral glia and of endocrine nature. The terminal bodies of the type 1 are characteristic with the glornerular arrangement of the nerve fibres extending widely in the whole territorium of the inner bulb, while the type 2 with the nerve distribution mainly in the center part of the inner bulb. The terminations of the type 3, which have no formation of the inner bulb and could be called the special ramified terminations too, are seen in general in the strong connective tissue, for example in the tunica albuginea of corpora cavernosa clitoridis. The thick medullated fibre loses its myelin just before the terminal formation and divides into many branches, which terminate with the. arrangement as seen in the type 2.