Figure 22.8 • Motility in the Colon – The colon is specialized for storage, and when bands of longitudinal muscle (taenia coli) contract, they form haustra. This is called segmental propulsion, which is very slow, and allows time for additional sodium and fluid absorption (colonic salvage). The slow movement dries out the chyme, producing feces. Several times a day mass movements will occur, creating peristaltic movements that force the chyme/feces toward the rectum. Factors that increase intestinal motility can cause diarrhea, by minimizing formation of haustrae and increasing mass movements.