anus
A muscular opening at the end of the rectum through which waste material is eliminated from the body
The anus is an opening located at the end of the rectum in the human body. It is the terminal part of the gastrointestinal tract and is responsible for the elimination of feces. The anus is surrounded by two sphincter muscles, the inner sphincter, which is involuntary, and the outer sphincter, which is voluntary. The anus is also a site for sexual stimulation in both males and females and is considered a sensitive area for many people. It is important to practice good hygiene to prevent bacterial infections and other health problems in and around the anus.
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