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The anus is the site of potential infections and other conditions, including cancer (see anal cancer). [4] With anal sex, the anus can play a role in sexuality. Attitudes toward anal sex vary, and it is illegal in some countries. [5] The anus is often considered a taboo part of the body, [5] and is known by many, usually vulgar, slang terms.
The anal canal is the part that connects the rectum to the anus, located below the level of the pelvic diaphragm. [1] It is located within the anal triangle of the perineum, between the right and left ischioanal fossa. As the final functional segment of the bowel, it functions to regulate release of excrement by two muscular sphincter complexes ...
In mammals, invertebrates and most fish, [1] [2] the anus (pl.: anuses or ani; from Latin, 'ring' or 'circle') is the external body orifice at the exit end of the digestive tract , i.e. the opposite end from the mouth. Its function is to facilitate the expulsion of wastes that remain after digestion.
The external anal sphincter is far more substantial than the internal anal sphincter. The proximal portion of external anal sphincter overlaps the internal anal sphincter (which terminates distally a little distance proximal to the anal orifice) superficially; where the two overlap, they are separated by the intervening conjoint longitudinal muscle.
The perineal raphe is a visible line or ridge of tissue on the body that extends from the anus through the perineum to the scrotum (male) or the vulva (female). It is found in both males and females, arises from the fusion of the urogenital folds, and is visible running medial through anteroposterior, to the anus where it resolves in a small knot of skin of varying size.
Cornhole (sometimes corn hole) is a sexual slang vulgarism for the anus. [1] The term came into use in the 1910s in the United States. [ 2 ] Its verb form, to cornhole , which came into use in the 1930s, means 'to have anal sex '.
The anal gland of the Indian mongoose consists of large sebaceous glands that surround the anus, called the anal sac. [24] The anal sac remains covered in sebum and remains closed when the tail of the mongoose is down but opens when the tail is raised. [24]
The human perineum is between the anus and scrotum in the male or between the anus and vulva in the female. [2] The perineum is the region of the body between the pubic symphysis (pubic arch) and the coccyx (tail bone), including the perineal body and surrounding structures.