The colon and how its bacteria helps digest food. The colon is a part of the digestive system it is also called the large intestine. The large intestine or colon is shorter than the small intestine but has a larger diameter. The length of the colon is approximately 5 feet long.
In summary, 1  Both endoscopy and colonoscopy are the procedures to visualise the gastro intestinal path (Food canal). 2  The differences are endoscopy will be inserted from the mouth; colonoscopy will be inserted from the anus. 3  Unlike in colonoscopy, bowel preparation is not needed to do the endoscopy.
1 Endoscopy has several names, depending on which portion of your digestive tract your doctor seeks to inspect. 2  Colonoscopy: This procedure enables the doctor to see ulcers, inflamed mucous lining of your intestine, abnormal growths and bleeding in your colon, or large bowel.