Haustrum (anatomy)
（重定向自Haustration）
The haustra (singular haustrum) of the colon are the small pouches caused by sacculation (sac formation), which give the colon its segmented appearance. The teniae coli run the length of the large intestine. Because the taenia coli are shorter than the intestine, the colon becomes sacculated between the teniae coli, forming the haustra.