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In humans, the anus (pl.: anuses or ani; from Latin ānus, "ring", "circle") [1] [2] is the external opening of the rectum located inside the intergluteal cleft.Two sphincters control the exit of feces from the body during an act of defecation, which is the primary function of the anus.
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.
The intergluteal cleft or just gluteal cleft, also known by a number of synonyms, including natal cleft and cluneal cleft, is the groove between the buttocks that runs from just below the sacrum to the perineum, [1] so named because it forms the visible border between the external rounded protrusions of the gluteus maximus muscles.
The rectum (pl.: rectums or recta) is the final straight portion of the large intestine in humans and some other mammals, and the gut in others. Before expulsion through the anus or cloaca, the rectum stores the feces temporarily.
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.
Cloaca of a red-tailed hawk. A cloaca (/ k l oʊ ˈ eɪ k ə / ⓘ kloh-AY-kə), pl.: cloacae (/ k l oʊ ˈ eɪ s i / kloh-AY-see or / k l oʊ ˈ eɪ k i / kloh-AY-kee), or vent, is the rear orifice that serves as the only opening for the digestive (), reproductive, and urinary tracts (if present) of many vertebrate animals.
The perineum (pl.: perineums or perinea) in placental mammals is the space between the anus and the genitals.The human perineum is between the anus and scrotum in the male or between the anus and vulva in the female. [2]
The word is mainly used as a vulgarity or a profanity, generally to describe people who are viewed as stupid, incompetent, unpleasant, or detestable. [9] Moral philosopher Aaron James, in his 2012 book, Assholes: A Theory, gives a more precise meaning of the word, particularly to its connotation in the United States: A person, who is almost always male, who considers himself of much greater ...