Prime Mover Anatomy The axle colon is encased in peritoneum, and is accordingly adaptable (unlike the locations of the colon anon afore and afterwards it). Added cancers analysis as the ample civil goes alternating and the capacity become added solid (water is removed) in adjustment to analysis feces. It is primarily supplied by the boilerplate colic artery, a annex of aloft mesenteric artery.
The bottomward colon is the allotment of the colon from the splenic bend to the alpha of the arced colon. It is retroperitoneal in two-thirds of humans. In the added third, it has a (usually short) mesentery. The arced colon is the allotment of the ample civil afterwards the bottomward colon and afore the rectum. The name arced agency S-shaped (see sigmoid). The walls of the arced colon are muscular, and arrangement to admission the accountability central the colon, causing the stool to move into the rectum.