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Anatomy - Right hemicolectomy, laparoscopically assisted
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Surgically relevant anatomy
- Synonym: Colon transversum
- Location: Intraperitoneal; mobile fixation via its own mesentery - transverse mesocolon.
- Identification: By the so-called
taeniae = taeniae coli = condensations of longitudinal muscle fibers named according to their anatomical relations as
- taenia libera (inferior)
- taenia omentalis (greater omentum)
- taenia mesocolica (transverse mesocolon)
- omental appendices = fat-filled tunica serosa
- Haustrae of colon = haustrae coli = visible sacculations in the wall of the colon wall by the arrangement of the circular muscle fibers (plicae semilunares; evident on endoscopy) which are discernible on the outer wall as crescentic folds.
- Definition: Section of the large bowel from the ileocecal valve, where the small intestine (ileum) enters the colon, to the hepatic (right) flexure.
- Synonym: Colon ascendens
- Location: secondary] retroperitoneal - peritoneal fixation to the posterior abdominal wall by the so-called Toldt membrane
- Identification: By the longitudinal bundles of muscle fibers- the taeniae, which keep their location-related terminology from the transverse colon; the diameter is markedly larger than that of the descending colon!