肺支配神経に関する実験組織学的研究

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The innervation of the lung was studied with Fukuyama's fan wise split preparation method and Seto's silver impregnation method in 60 adult dogs. The myelinated fibers in pulmonary plexus were examined macroscopically and histologically, then the route and distribution of the fibers were researched by the nerve degeneration experiments. The result obtained are summarized as follows : 1. There were many myelinated fibers in pulmonary plexus, i. e. 4406 fibers (right side 2491, left side 1915) on the average of 10 dogs. 2. The myelinated nerve fiber constitution of pulmonary plexus was as follows: The maximum sized fibers occupied 14.8%, the large sized 17.9%, the medium sized 28.0% and the small sized 39.3% on the average. The maximum and large sized fibers that was regarded as sensory fibers was counted in a great many numbers comparison with other organs (particulary abdominal organs). 3. The beginning of myelinated nerve fiber in pulmonary plexus was as follows: The fibers from supra-nodal fibers in.N. Vagus were 61〜64%, and from nodal fibers were 18〜28%, and from the ventral and dorsal roots of spinal nerves were few. 4. The nerve fibers in the lung from N. Vagus (from the supranodal, nodal and infranodal fibers) were mixture of sensory and parasympathetic fibers. The fibers from the ventral roots that proved only few were concluded as sympathetic preganglionic fibers and from the dorsal roots as sensory. 5. As for "the crossing fibers" distributing from one side pulmonary plexus to another side, the fibers from right to left were comparatively many, but the fibers from left to right were a few or none. 6. The complicated diverged endplate consisting of thick axons, and simple diverged or not diverged endplate consisting of thin axons were confirmed in the lung by Seto's silver impregnation method.
千葉大学の論文

肺支配神経に関する実験組織学的研究

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