Abstract
In conclusion, it may be said that the propulsion of colonic contents can be effected either by systolic or progressive contractions of the bowel wall. The two modes of transportation can usually be identified in time-lapse cinefluorograms even at 1 frame/min from the regularity of the movement of opaque contents. Evidence is presented of a form of progressive propulsion which has all the characteristics of peristalsis that are recognizable by this method of study, and yet is capable of travelling adorally up the colon. It is not possible to say what the relationship of this kind of movement is to the strictly aboral mass peristalsis with which workers in this field are so much more familiar.
Published Version
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