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.
What Is a Colonoscopy? During a colonoscopy, your doctor uses a thin, flexible camera to check for abnormalities or disease in your lower intestine or colon. The colon is the lowest portion of the gastrointestinal tract that takes in food, absorbs nutrients, and disposes of waste. The colon is attached to the anus via the rectum. The anus is the opening in your body where feces are expelled. During a colonoscopy, your doctor may also take tissue samples for biopsy. They may also remove abnormal tissue such as polyps.