reverse peristalsis


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Related to reverse peristalsis: antiperistalsis

reverse peristalsis

reverse peristalsis

Antiperistalsis A wave of contraction of GI tract smooth muscle which moves contents orally

reverse peristalsis

Peristalsis in a direction opposite to the normal direction. Synonym: antiperistalsis
See also: peristalsis

peristalsis

the wormlike movement by which the alimentary canal or other tubular organs with both longitudinal and circular muscle fibers propel their contents, consisting of a wave of contraction passing along the tube. Increased peristalsis means faster movement of ingesta through the gut and less absorption of fluid, both tending to diarrhea. Reduced peristalsis means a longer alimentary sojourn, greater inspissation of ingesta and a tendency to constipation. See also peristaltic, paralytic ileus.
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Peristalsis. By permission from Aspinall V, O'Reilly M, Introduction to Veterinary Anatomy and Physiology, Butterworth Heinemann, 2004

reverse peristalsis
peristalsis directed orally is a result of intestinal obstruction and acute, significant distention of the intestinal lumen; it is a major contributing mechanism in vomiting.
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