anus


Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.
Related to anus: hemorrhoids

anus

 [a´nus] (pl. a´nus)
the opening of the rectum on the body surface.
 The anus. Left, Endoanal magnetic resonance image of the sphincter muscles. High-definition images can be obtained by using an endoanal MRI coil. Right, Explanatory diagram (coronal view in a normal patient). From Aspinall and Taylor Robinson, 2001.
imperforate anus congenital absence of the normal opening of the rectum. Called also anal atresia and atresia ani.

a·nus

, gen. and pl.

ani

(ā'nŭs, -nī), [TA]
The lower opening of the digestive tract. It is associated with the anal sphincter and lies in the cleft between the buttocks, through which fecal matter is extruded.
Synonym(s): anal orifice
[L.]

anus

(ā′nəs)
n. pl. anuses
The opening at the lower end of the digestive tract through which solid waste is eliminated from the body.

anus

The anatomic structure which opens to the rectum. It is covered by squamous epithelium and is susceptible to HPV and other infections.

a·nus

, gen. and pl. ani (ā'nŭs, ā'nī) [TA]
The lower opening of the alimentary (digestive) tract, lying in the intergluteal cleft between the buttocks, through which feces or excrement is discharged.
[L.]

anus

The short terminal portion of the ALIMENTARY CANAL which contains two SPHINCTERS by means of which the contents of the RECTUM are retained until they can conveniently be discharged as faeces. Between the sphincters are 6 to 10 vertical columns of mucous membrane containing plexuses of veins. These press together to form watertight seals.

anus

the posterior opening of the ALIMENTARY CANAL, often surrounded by a ring of muscle called the anal SPHINCTER, which is under nervous control (see AUTONOMIC NERVOUS SYSTEM and which regulates the release of gut contents to the outside (DEFECATION).

Anus

The opening at the lower end of the rectum. The anus and rectum are both part of the large intestine, a digestive system organ.

Patient discussion about anus

Q. Pulling pain in anus. Dear friends, I am 32. I feel a Pulling pain in anus sometimes while i finish passing stool and some times when i sit for long time. No bleeding so far. Is it a symptoms of piles? If so what can be done to cure it without going to doctor or operation. Please help me. This pain makes me to feel that i am very old.

A. horsechestnut is supposed to help...here is some info about it:
http://nccam.nih.gov/health/horsechestnut/index.htm#uses

but i wouldn't get my hopes high.

More discussions about anus
References in periodicals archive ?
With the help of Richard Amory's Song of the Loon and Kent Monkman, the argument of innocent homosexuality is put into context with settler colonialism, scientific racism, and Indigeneity in "Spanking Colonialism," which broadens into Allan's earlier ruminations about whether or not "the anus itself [is] always already racialized" (21).
Over time, these bands can become lax or break, causing the hemorrhoid to fall, or prolapse, outside the anus. This prolapse can allow mucous and some stool to leak from the anus and cause itchiness and slight incontinence.
The low detection rates of HPV DNA in cervix and anus limited the power of this study to evaluate associations with HPV serology, particularly for specific HPV types.
Imperforate anus is associated with an increased incidence of some specific anomalies as well, together being called the VACTERL association [7]: V-Vertebral anomalies, A-Anal atresia, C-Cardiovascular anomalies, TE-Tracheoesophageal fistula, R-Renal or radial anomalies, L-Limb defects.
Posterior sagittal anorectoplasty for imperforate anus: a pre-liminary result.
Principles and practice of surgery for the colon, rectum and anus. New York London Informa Health-care inc 2007; 3: 203-20.
Talking to Prestatyn-raised Vorderman, 55, she said: "It might be an anus muffin or sommatt", adding that if there was "garnish" on the side she would be fine.
At an initial study visit then every 6 months, men completed a questionnaire and used swabs to collect separate samples from the anus and the penis.
Many dog owners are oblivious to the existence of these two sacs, whose openings are positioned at four and eight o'clock as the clock ticks around the dog's anus, and are not obvious to the untrained eye.
Keywords: Enterolith, Colostomy, Imperforate anus, Urinary obstruction, Intestinal obstruction.