The colon is located between the cecum and the rectum. It exists as part of the large intestine and includes a total of four sections.
The colon is between 5 and 6 feet long and has a diameter of about 3 inches. It includes the ascending colon, the transverse colon, the descending colon and the sigmoid colon. The contents are pushed along through these four sections by the organ's muscles, and as the colon removes nutrients, water and salt from the food, stool is created, which then travels to the rectum. This process takes roughly 36 hours, and stool is moved from the sigmoid colon into the rectum one or two times per day. Defecation eventually occurs and involves the expulsion of feces from the rectum via the anus.