NCIt definition : A series of coordinated, rhythmic muscle contractions that occur throughout the length
of the gastrointestinal tract and in the ureters. The body utilizes alternating muscles
that contract and relax to move fluids and solids from one cavity to another.;
Alternative definition : NCI-GLOSS: The rippling motion of muscles in the intestine or other tubular organs
characterized by the alternate contraction and relaxation of the muscles that propel
the contents onward.;