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Taenia coli

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Title: Taenia coli  
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Subject: Gut-associated lymphoid tissue, Large intestine, Taenia, Colon (anatomy), Featured picture candidates/Digestive system diagram
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Taenia coli

Teniae coli
Iliac colon, sigmoid or pelvic colon, and rectum seen from the front, after removal of pubic bones and bladder. (Tænia coli not labeled, but visible at center.)
Female pelvis and its contents, seen from above and in front. (Taenia coli not labeled, but visible at right.)
Details
Latin Taeniae coli
Dorlands
/Elsevier
t_01/12789456
Anatomical terminology

The teniae coli (also taeniae coli) are three separate longitudinal ribbons of smooth muscle on the outside of the ascending, transverse, descending and sigmoid colons. They are visible, and can be seen just below the serosa or fibrosa. They are the Mesocolic, Free and Omental Coli. The teniae coli contract lengthwise to produce the haustra, the bulges in the colon.

The bands converge at the root of the vermiform appendix. At the rectosigmoid junction, the taeniae spread out and unite to form longitudinal muscle layer.

These bands correspond to the outer layer of the muscularis externa, in other portions of the digestive tract.

Large bowel (sigmoid colon) with multiple diverticula. These appear on either side of the longitudinal muscle bundle (taenium).

The tæniæ coli are regulated by the sacral nerves of the spinal cord, which are under control of the parasympathetic nervous system.[1]

References

  1. ^ Lambert, H. Wayne; Wineski, Lawrence E. (2011). Anatomy & Embryology.  

External links

  • Histology image: 12502loa – Histology Learning System at Boston University - "Digestive System: Alimentary Canal: colon, taeniae coli"
  • UIUC Histology Subject 853
  • Anatomy photo:39:13-0201 at the SUNY Downstate Medical Center - "Intestines and Pancreas: Large Intestine"
  • Anatomy image:8185 at the SUNY Downstate Medical Center


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