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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.
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.
Anal retentiveness is a personality trait that is characterized by excessive concern with details. [1] The concept originated in Freudian psychoanalytic theory, where one aspect of the anal stage of psychosexual development is pleasure in the retention of feces .
A rectal prolapse occurs when walls of the rectum have prolapsed to such a degree that they protrude out of the anus and are visible outside the body. [2] However, most researchers agree that there are 3 to 5 different types of rectal prolapse, depending on whether the prolapsed section is visible externally, and whether the full or only partial thickness of the rectal wall is involved.
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 ...
The human rectum is a part of the lower gastrointestinal tract. The rectum is a continuation of the sigmoid colon, and connects to the anus. The rectum follows the shape of the sacrum and ends in an expanded section called an ampulla where feces is stored before its release via the anal canal.
The combined form arsehole is first attested from 1500 in its literal use to refer to the anus. The word evolved from "arce-hoole" (circa 1400), as in Old English, the Latin word "anus" was glossed with earsðerl, literally "arse-thrill" (thrill being a noun with the original meaning of "hole" such as in nostril, meaning "nose hole"). [2]
Rectal discharge is intermittent or continuous expression of liquid from the anus ().Normal rectal mucus is needed for proper excretion of waste. Otherwise, this is closely related to types of fecal incontinence (e.g., fecal leakage) but the term rectal discharge does not necessarily imply degrees of incontinence.