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The function of the descending colon in the digestive system is to store the remains of digested food that will be emptied into the rectum. The descending colon is on the left side of the body (barring any malformations). The term left colon is hypernymous to descending colon in precise use; many casual mentions of the left colon chiefly ...
In human anatomy, the inferior mesenteric artery (IMA) is the third main branch of the abdominal aorta and arises at the level of L3, supplying the large intestine from the distal transverse colon to the upper part of the anal canal. The regions supplied by the IMA are the descending colon, the sigmoid colon, and part of the rectum. [1]
The sigmoid colon is completely surrounded by peritoneum (and thus is not retroperitoneal), which forms a mesentery (sigmoid mesocolon), which diminishes in length from the center toward the ends of the loop, where it disappears, so that the loop is fixed at its junctions with the iliac colon and rectum, but enjoys a considerable range of movement in its central portion.
Sigmoid colon and rectum, ... sigmoid arteries are 2–5 branches of the inferior mesenteric artery that are distributed to the distal descending colon and the ...
The sigmoid colon is the part of the large intestine after the descending colon and before the rectum. The name sigmoid means S-shaped (see sigmoid; cf. sigmoid sinus). The walls of the sigmoid colon are muscular and contract to increase the pressure inside the colon, causing the stool to move into the rectum. The sigmoid colon is supplied with ...
The inferior mesenteric lymph nodes drain structures related to the hindgut; [1] they receive lymph from the descending colon, sigmoid colon, and proximal part of the rectum. [ 2 ] Efferents
The descending and sigmoid colon are typically involved. Biopsies of the affected area and the unaffected rectum confirm the diagnosis. [1] Biopsies of SCAD show evidence of chronic inflammation. Rectal biopsies show normal mucosa. It is important and occasional difficult to distinguish SCAD from inflammatory bowel disease (IBD).
They also use it to look for benign and malignant polyps, as well as early signs of cancer in the descending colon and rectum. [1] With flexible sigmoidoscopy, the physician can see intestinal bleeding, inflammation, abnormal growths, and ulcers in the descending colon and rectum. Flexible sigmoidoscopy is not sufficient to detect polyps or ...