Home > Medical > Digestive health > Anal and rectal disorders Anal and rectal disorders All sections in Digestive Health » About Gastro » Anal & Rectal Disorders » Digestive Disorders » Common Symptoms » Dehydration » Digestive Health » Gastro & Food Illness » IBS » News » Tests & Procedures Your anus Often regarded as taboo, erotic, and many times, used as an offensive term, the primary purpose of the anus is for defecation, better known as pooing. Rectal cancer Colon cancer is cancer of the large intestine (colon), which is the lower part of the digestive system. Rectal cancer occurs on the last eight to 10 inches of the colon. Ulcerative colitis Ulcerative colitis is an inflammatory bowel disease. It causes inflammation and ulders in the lining of the large intestine. Test Calcium calculator » Test Is my heartburn serious? » Follow Health24 on Pinterest » Ask CyberDoc » This ad is causing a big stink The scoop on poop Haemorrhoids - graphic WARNING: This page contains graphic medical images. Faecal incontinence Faecal incontinence is the inability to control your bowels. Proctitis Proctitis is inflammation of the lining of the rectum, called the rectal mucosa load more articles advertisement From our sponsors Your retirement - a healthy mindset So many people, why so alone? You can still enjoy the sweet things in life Take the sugar test, it could save your life.