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.
A colonoscopy is an exam that views the inside of the colon (large intestine) and rectum, using a tool called a colonoscope. The colonoscope has a small camera attached to a flexible tube that can reach the length of the colon. Colonoscopy is done most often in a procedure room at your doctor's office. It can also be done in the outpatient department of a hospital or medical center. You will be asked to change out of your street clothes and wear a hospital gown for the procedure.