anus


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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

(a´nus) pl. a´ni   the opening of the rectum on the body surface; the distal orifice of the alimentary canal.
imperforate anus  persistence of the anal epithelial plug so that the anus is closed, either completely or partially.

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

[ā′nəs]
the outlet at the terminal end of the anal canal lying in the fold between the buttocks. anal, adj.

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.

anus

the terminal opening of the alimentary canal. See also anal.

imperforate anus
congenital absence of the normal opening of the rectum. Called also anal atresia, atresia ani.
anus of Rusconi

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 ?
But one of the things that's likely to cause a dog discomfort and anxiety is handling around his anus.
An enteroliths causing intestinal obstruction and sometimes perforation has been reported rarely, but such stone causing bladder outlet obstruction in association with imperforate anus has not been reported yet.
On further probing he gave alleged history of accidental insertion of foreign body through anus one day back, following which he tried to remove it by himself multiple times and even cut his abdomen in the left lower side to remove it manually but failed.
The protruding catheter can be removed by pulling it through the anus, surgical removal, or endoscopic removal, based on the clinical state of the patient.
Occasionally a low-lying cancer arising from the anus or rectum can cause severe anal pain due to sepsis or sphincter invasion (Fig.
Jevi Millana was rushed to the hospital by his parents after he collapsed and later on died after Jeffry Namoco stuck a nose used to inflate tyres up his anus on Friday, the daily Philippine Star reported.
For cats who are fecally incontinent, a veterinary neurologist can perform a test called an electromyogram that can predict with reasonable accuracy whether the muscle tone of the anus will eventually improve.
Now Mlalazi has revealed he is being tormented by a 10cm stick which he inserted up his anus at the same time as the bearings, on the recommendations of a self-styled traditional healer.
The purpose of the ducts is to transport a smelly, viscous fluid (secreted by many tiny glands within the walls of the anal sacs) from the sacs to the anus.
The glands are positioned at 4 o'clock and 8 o'clock of the anus and can be gently squeezed to empty them.