Haustrum (anatomy)

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Haustra
Gray536.png
Arteries of cecum and vermiform process.
Stomach colon rectum diagram-en.svg
Details
Latin haustra coli
Identifiers
Dorlands
/Elsevier
h_03/12408675
TA A05.7.03.009
FMA FMA:14552
Anatomical terminology

The haustra (singular haustrum) of the colon are the small pouches caused by sacculation, 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.

Haustral contractions are slow segmenting, uncoordinated movements that occur approximately every 25 minutes. One haustrum distends as it fills with chyme, which stimulates muscles to contract, pushing the contents to the next haustrum. Also see peristalsis.

There is a wider distance between haustra than between the circular folds of the small intestine, and the haustra don't reach around the entire circumference of the intestine, in contrast to circular folds of the small intestine that do. These differences can assist in distinguishing the small intestine from the colon on an abdominal x-ray.

Loss of haustra is a sign of chronic ulcerative colitis.[1]

References[edit]

  1. ^ [1] Gore, R. (1992). "Colonic contour changes in chronic ulcerative colitis: Reappraisal of some old concepts". AJR. American journal of roentgenology 158 (1): 59–61. doi:10.2214/ajr.158.1.1727359. PMID 1727359.  edit