di·a·stal·sis (d   -stôl s s, -st l-)n. Peristalsis in which a region of inhibition precedes the wave of contraction, as in the intestinal tract. di a·staltic (-stôltk, -stl-) adj. |
diastalsis
[dī′əstal′sis]
a wave of alternating relaxation and contraction of the smooth muscles lining the walls of the small intestine in response to distension of the intestine.
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