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 a procedure that allows your doctor to examine the lining of your colon for abnormalities. Most of the time, the bleeding will stop on its own. 2  Very rarely (only in about 1 out of every 1,000 colonoscopies), the scope can make a hole, called a perforation, in the wall of your colon. 3  This may need more surgery or treatment with medication. 4  Sometimes, the colonoscopy can miss a polyp.