sphincter


Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to sphincter: sphincter muscle, Sphincter of Oddi, sphincterotomy, sphincter spasm, Esophageal sphincter

sphinc·ter

 (sfĭngk′tər)
n.
A ringlike muscle that normally maintains constriction of a body passage or orifice and that relaxes as required by normal physiological functioning.

[Late Latin sphinctēr, from Greek sphinktēr, from sphingein, to bind tight.]

sphinc′ter·al adj.

sphincter

(ˈsfɪŋktə)
n
(Anatomy) anatomy a ring of muscle surrounding the opening of a hollow organ or body and contracting to close it
[C16: from Late Latin, from Greek sphinkter, from sphingein to grip tightly]
ˈsphincteral adj

sphinc•ter

(ˈsfɪŋk tər)

n.
a circular band of voluntary or involuntary muscle that encircles and closes an orifice of the body or one of its hollow organs.
[1570–80; < Late Latin < Greek sphinktḗr=sphing-, base of sphíngein to hold tight + -tēr agent suffix]
sphinc′ter•al, adj.

sphinc·ter

(sfĭngk′tər)
A ring-shaped muscle that encircles an opening or passage in the body. Contraction and relaxation of a sphincter closes and opens the passage.

sphincter

A ring-shaped muscle that contracts to close an orifice.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sphincter - a ring of muscle that contracts to close an opening
muscle, musculus - one of the contractile organs of the body
physiological sphincter - a sphincter that is not recognizable at autopsy because its resting arrangement cannot be distinguished from adjacent tissue
anal sphincter, musculus sphincter ani, sphincter ani - the sphincter muscle of the anus
musculus sphincter urethrae, urethral sphincter - a striated sphincter muscle that constricts the urethra
bladder sphincter, musculus sphincter vesicae - the sphincter muscle of the urinary bladder; made up of a thickened muscular layer of bladder around the urethral opening
musculus sphincter ductus choledochi - the smooth muscle sphincter of the common bile duct
musculus sphincter ductus pancreatici - the smooth muscle sphincter of the main pancreatic duct
musculus sphincter pupillae, pupillary sphincter - a ring of smooth muscle surrounding the iris
musculus sphincter pylori, pyloric sphincter, pyloric valve - the sphincter muscle of the pylorus that separates the stomach from the duodenum
Translations
svěrač
sulkijalihas

sphincter

[ˈsfɪŋktəʳ] Nesfínter m

sphincter

[ˈsfɪŋktər] nsphincter m

sphincter

n (Anat) → Schließmuskel m, → Sphinkter m (spec)

sphinc·ter

n. esfínter, músculo circular que abre y cierra un orificio.

sphincter

n esfínter m
References in periodicals archive ?
a leader in therapeutic interventions for sphincter-related diseases, announced today the release of new data from a 415 patient, multi-institutional study, comparing magnetic sphincter augmentation to laparoscopic Nissen fundoplication (LNF) for control of reflux.
The investigation confirms multiple mechanisms that may regenerate and improve the function of the treated sphincter muscles, offering symptom improvement for patients suffering from these debilitating disorders.
1] In this group, the 5-, 10- and 15-year cumulative rates of insertion of an artificial urinary sphincter (AUS) or male urethral sling were 2.
Recently Richard Craver, writing in the Winston--Salem Journal, reported that researchers at The Institute of Regenerative Medicine, Wake Forest University, produced the first functional anal sphincter in a laboratory setting.
BALTIMORE - Anal sphincter laceration is significantly associated with anal incontinence 5-10 years after a woman's first delivery and has significant impact on quality of life, compared with women who had a vaginal delivery without laceration and women who had cesarean section.
The average adult bladder can hold over two cups (350ml-550 ml) of urine," Dr Ghafouri explained adding that two muscles were involved in the control of urine flow: the sphincter, which is a circular muscle surrounding the urethra and the detrusor, which is the muscle of the bladder wall.
This is the first bio-engineered sphincter made with both muscle and nerve cells, making it 'pre-wired' for placement in the body," he said.
The usual causes of reflux are either a weak sphincter or a hiatus hernia, where the top of the stomach pokes up above the sphincter and stops it from closing properly.
Achalasia is an idiopathic motility disorder of the oesophagus characterised by aperistalsis of the oesophageal body and incomplete relaxation of the lower oesophageal sphincter during swallowing (1).
These measures deal with the mechanical causes of stress but a new approach focusing on the physiology of the urethral sphincter is now reported.
Findings on transnasal esophagoscopy were normal except for the presence of a widely patulous lower esophageal sphincter (LES) (figure).