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Large Intestine

...  marking the start of its sigmoid part. The rectum makes up the remaining 7 ½ inches. The last three centimeters is what’s known as the anal canal. The rectum is positioned before the sacrum, and it’s secured in that position by the peritoneum. The anus is the opening of the anal canal that serves as the exit to the body. The wastes deposited in the anal canal are being  ...