[contentuser]

The anus (opening of the anal canal) functions as eliminator of waste, sexual organ, and intake orifice for treatment (e.g., suppository, enema). It is necessary to care for the anus, anal canal, and rectum if they are involved in sexual activity. Sexually transmitted diseases (STDs) can be transmitted through anal sex and can affect the anus itself. And anal cancer is associated with STDs in men and women. Damage to the internal and external skin and tissue of the anus jeopardizes health, c...Read the full article

[Smoothstone]

Suggestion: a section on the sphincter muscle, relaxation of sphincter muscle to achieve painless anal penetration. Thanks.