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- 迫田 哲司
- 日本医科大学第2解剖学教室 日本医科大学整形外科学教室
書誌事項
- タイトル別名
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- Morphological investigation of the lumbar sympathetic nerve trunks and ganglia of the human fetus
抄録
It is suggested that the mechanical compression or traction of the sympathetic nerve trunks or their rami communicantes may serve as one of frequent causes of lumbago which is encountered in daily orthopedic clinic.<BR>Related to this viewpoint, there was no detailed report on the anastomoses between the bilateral sympathetic trunks and on the course of them and on the morphologic features and locations of the sympathetic ganglia.<BR>The present investigation has been made to elucidate the abovementioned anatomical features of the sympathetic nerve trunks and their rami communicantes and the following results were obtained.<BR>Twenty sympathetic nerve trunks from 10 fetuses, varying 6 to 10 months in age had served as materials in this study.<BR>1) Regarding to the running fashion of the bilateral sympathetic nerve trunks, they tended to run downward apart from the median line.<BR>2) The lumbar sympathetic ganglia were usually located in certain segmental fashion, and three to six ganglia were distributed in one side. As a matter of fact, average numbers of the right side were 4.8 and 4.4 on the left side respectively.<BR>3) Regarding to the morphological features of each trunk ganglion, it was featured with flattened contour which is attached to the vertebral column. The most numerous form of the lumbar ganglia was long oval types and amounted to 72.8%. The trunk sympathetic ganglia which possessed large or many rami communicantes disclosed rather irregular configuration. As the ganglia located in the lower vertebral level, the configuration appeared to be much larger in comparison with those which located in the upper portion.<BR>4) The morphologic features of the anastomoses which are communicating with the bilateral sympathetic trunks were divided into five categories. The anastomoses were counted 20, 0% and 80% in the upper and the lower portions respectively and majority of them were present in the lower portion of the lumbar spines.<BR>5) The rami communicantes to the ventral rami of the lumbar spinal nerves were descreased in number and getting larger in size in the lower portion of the lumbar spines.<BR>6) The rami communicantes to the dorsal rami of the lumbar spinal nerve were confirmed in 34 portions out of 100 portions. Numbers and course of the rami communicantes to the lumbar dorsal rami of the fetuses were simpler than that of adult (Fujikura, Dass).<BR>7) Ganglia intermedia (Feneis) situated in the rami communicantes were obtained in all 10 cases.
収録刊行物
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- 日本医科大学雑誌
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日本医科大学雑誌 50 (5), 681-692_14, 1983
日本医科大学医学会
