human_reference_atlas part of has part smooth muscle cell Homo sapiens large intestine ascending colon transverse colon descending colon sigmoid colon organ component layer taenia coli free coli tenia coli Wikipedia:Taenia_coli FMA:15041 omental coli mesocolic coli tenia coli AS The taeniae coli (also teniae 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 contracts length wise to produce the haustra, the bulges in the colon. The bands converge at the root of the vermiform appendix and the rectum. These bands correspond to the outer layer of the muscularis externa, in other portions of the digestive tract. teniae coli taeniae coli free coli UBERON:0012419 SCTID:362160001 tenia coli longitudinal band of large intestine muscularis uberon longitudinal bands mesocolic coli omental coli splenic flexure of colon hepatic flexure of colon