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.
The patient will be in the Operating Room for 20-45 minutes for an upper endoscopy, and 30-120 minutes for a colonoscopy.Many patients have both an upper endoscopy and colonoscopy under the same anesthesia, which takes 40-120 minutes. http://www.cincinnatichildrens.org/health/info/abdomen/procedure/gi-endoscopy.htm.I had an endoscopy last month and the actual proceduare was only about 10 min because it was normal.any patients have both an upper endoscopy and colonoscopy under the same anesthesia, which takes 40-120 minutes. http://www.cincinnatichildrens.org/health/info/abdomen/procedure/gi-endoscopy.htm.