Distribution and morphological characterization of viscerofugal projections from the large intestine to the inferior mesenteric and pelvic ganglia of the male rat

Neuroscience
G B Luckensmeyer, J R Keast

Abstract

Viscerofugal neurons are enteric neurons in the myenteric plexus of the stomach and intestine that project to the prevertebral ganglia as the afferent limb of intestino-intestinal reflexes. This study characterizes viscerofugal projections to the inferior mesenteric ganglion and investigates the possibility of similar projections to the major pelvic ganglia in the male rat. The colon and rectum were examined for retrogradely labelled neurons following the injection of retrograde tracer into the inferior mesenteric or major pelvic ganglia, or following the application of tracer to the caudal end of the cut intermesenteric nerves, or either end of the cut hypogastric nerves. All labelled viscerofugal neurons were found in the myenteric plexus and were often grouped near the mesenteric attachment. The number of viscerofugal neurons projecting to the inferior mesenteric ganglion via the lumbar colonic nerves increases along the length of the large intestine with the maximum number of viscerofugal neurons found in the rectum. Some viscerofugal neurons from the distal colon and rectum reach the inferior mesenteric ganglion via the hypogastric nerves. A similar number and distribution of viscerofugal neurons project via the inferior m...Continue Reading

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Citations

Dec 24, 2005·Cell and Tissue Research·Robert J RichardsonColin R Anderson
Sep 6, 2002·Neurogastroenterology and Motility : the Official Journal of the European Gastrointestinal Motility Society·S M Miller, J H Szurszewski
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Jun 22, 2007·Biology of Reproduction·Jacques BernabéFrançois Giuliano
Nov 4, 2016·American Journal of Physiology. Gastrointestinal and Liver Physiology·Gwen PalmerMark Taylor

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