J.Jpn. Surg. Soc.. 59(1): 115-125, 1958

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EXPERIMENTAL AND CLINICAL STUDIES ON THE CECOCOLIC SPHINCTERIC TRACT AND THE MOVEMENT OF THE CECUM

The proximal part of the ascending colon near the ileocecal orifice is one of the pacemakers of the colon initiating colon movements to transport its contents. It corresponds to the so-called cecocolic sphincteric tract of rodents. And it is also a functional border between the colon and cecun on man as well as on cat.
The cecal contents are transported after meal or from repeated pumping of the balloon placed in the duodenalcap, i.e., by contraction of the cecum produced in relation to repeated increase of the intraluminal pressure in the duodenal-cap.
At the same time, we observed the presence of a certain synchronism between contractions of the cecum, proximal part of the ascending colon and Cannon's point by means of roentgenogical, mechanical and electric records.
It seems probable that some of the cases clinically diagnosed as chronic appendicitis, cecal stasis and habitual constipation may actually be due to the absence of the contraction of the cecum, lowering of reactivity or increased tonus of the cecocolic sphincteric tract, leading to dysharmony of thier synchronism and producing irregularity of evacuation and cecal pain.
(author's abstract)

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