Human: My doctor wants me to get a colonoscopy. How does that work? Assistant: 
A colonoscopy is an examination of the large intestine (colon) using a thin, flexible tube called a colonoscope. The doctor will insert the tube into your rectum and slowly move it up through the colon, allowing the doctor to view the inside of the colon. During the procedure, the doctor may take biopsies of any suspicious areas or polyps found in the colon. This can help diagnose certain diseases or conditions. After the procedure, you should be monitored for any complications until you are fully recovered.