1. Neurohistological Studies of the Anus among Japanese:Third Report Nerve Fibers and Nerve Endings in the Internal Anal Sphincter

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概要

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• The nerve supply of the internal sphincter had two origins.<BR>The first was the intrinsic AUERBACH'S plexus, which was found apparently in the foetus and the newborn at the upper end of the internal sphincter but uncertain in the older subjects. The proper innervation of the AUERBACH'S plexus in the internal sphincter was seen as far as ganglions were existed, but anally, where the ganglions disappeared, numerous extrinsic nerve fibers were seen instead of the AUERBACH'S plexus in the internal .sphincter.<BR>The second was the extrinsic nerve fibers came from the pelvic space, passed through the longitudinal muscle, and distributed numerously in the internal sphincter where ganglions were absent. Above the dentate line, some of the extrinsic fibers left the internal sphincter for the subepithelial tissue. Argyrophobe thin fibers were considered as the autonomic nerve fibers. Some of argyrophil thick fibers forked into two branches and ended free. It could not be deny that these thick fibers might be afferent fibers.

• 日本大腸肛門病学会の論文

著者

• 永井 克彦

  大阪医科大学第一外科学教室

関連論文

• 1. Neurohistological Studies of the Anus among Japanese:Third Report Nerve Fibers and Nerve Endings in the Internal Anal Sphincter
• II. Neurohistological Studies of the Anus Among Japanese:Second Report Nerve Fibers, Nerve Endings and Ganglion Cells in the Intersphincteric Tissue
• 2. Neurohistoloical Studies of the Anus among Japanese:Fourth Report Nerve Fibers and Nerve Endings in the Lining Tissue of the Anal Canal

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