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Figure 3: Creation of human colon anatomy. (a) The coiled colon loops are separated to create one long straight colon. The posterior peritoneum is incised from the sigmoid to the spleen. A retroperitoneal space is created to accommodate the ‘descending colon’ up to the spleen, starting at the sigmoid. (b) The incised peritoneum is sutured to maintain a retroperitoneal position for the descending colon as in the human. Beyond the splenic flexure, the bowel continues intraperitoneally as the distal transverse colon

Figure 3: Creation of human colon anatomy. (a) The coiled colon loops are separated to create one long straight colon. The posterior peritoneum is incised from the sigmoid to the spleen. A retroperitoneal space is created to accommodate the ‘descending colon’ up to the spleen, starting at the sigmoid. (b) The incised peritoneum is sutured to maintain a retroperitoneal position for the descending colon as in the human. Beyond the splenic flexure, the bowel continues intraperitoneally as the distal transverse colon