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.
Follow Following Unfollow Pending Disabled. A Dr. Jonathan Aviv, MD , Ear, Nose & Throat (Otolaryngology), answered. The difference between an endoscopy and a transnasal esophagoscopy is that you need to be sedated for an endoscopy, which increases the risk of complications. In this video, otolaryngologist Jonathan Aviv, MD, explains the difference in detail.