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The large intestine is more commonly referred to by its Greek name, the colon is the last part of the digestive system. The large intestines function is to absorb water from indigestible food matter, then to pass useless waste material from the body. The large intestine is about 4.9 feet long and consists of the cecum, colon, rectum, and anal canal. It starts in the right iliac region of the pelvis where it’s joined to the bottom end of the small intestine it continues up the abdomen then across the width of the abdominal cavity, and then it turns down and continues to its endpoint at the anus.