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  • Title: Two submucosal nerve plexus in human intestines.
    Author: Brehmer A, Rupprecht H, Neuhuber W.
    Journal: Histochem Cell Biol; 2010 Feb; 133(2):149-61. PubMed ID: 19911189.
    Abstract:
    We examined the architecture of human submucosal nerve networks of gut segments derived from 12 individuals (each six from small and large intestines). Twelve undivided submucosal wholemounts were prepared and immunohistochemically stained for peripherin (nerve elements) and for alpha-smooth muscle actin (remnants of attached muscle bundles). We found two ganglionic nerve networks. The plexus submucosus externus was generally monolayered and located under the outermost surface of the submucosal wholemounts. Its nerve fibre strands frequently joined each other in acute or obtuse angles, the meshes of the network were relatively wide and frequently polyangular shaped. The plexus submucosus internus was generally multi-(mostly two- or three-)layered and occupied at least the inner half of the thickness of the wholemount, sometimes extending abluminally beyond the great submucosal vessels. Its meshes were irregular. The shapes of ganglia of the two plexus were generally different, those of the internal plexus were frequently grape-like whereas the neurons of external ganglia were mostly embedded in the contoures of the joining nerve fibres. Both plexus were intensely connected via coiled interconnecting strands, either with or without intercalated ganglia. For use of eponyms for two different submucosal plexus, the names of Meissner (inner) and Schabadasch (outer) are historically justified.
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