(n.) A muscle which surrounds, and by its contraction tends to close, a natural opening; as, the sphincter of the bladder.
(a.) Of, pertaining to, or designating, a sphincter; as, a sphincter muscle.
Example Sentences:
(1) We suggest that neuronal PACAP may serve to modulate motor activity and secretion in the lower esophageal sphincter region.
(2) Although it is known that the sphincter of Oddi exhibits a myoelectric response to intraluminal nutrients, the effect of specific dietary components has not been well characterized.
(3) Fourteen patients were examined one to four years after cricopharyngeal myotomy that had been carried out because of dysfunction of the pharyngo-esophageal sphincter.
(4) The paper postulates that 'anal or sphincter defensiveness' is one of the precursors of the repression barrier.
(5) In 36 patients plastic reconstruction of the urinary bladder, sphincter and urethra was performed with local tissues after the Young technic in the G. A. Bairov modification.
(6) 12 children (38%) showed modifications of bladder-sphincter equilibrium, without acquiring socially sufficient continence.
(7) We found that in the patient's view an adequate result requires establishment of a proper lip sphincter--either by restoring muscular tone, or by creating an anatomical framework to which can be added either a motor unit or stabilization to aid the opposite intact muscle.
(8) Extensive drainage procedures were avoided to preserve the anal sphincter.
(9) Changes in pupil size indicated a substantial cholinergic effect on the iridal sphincter musculature.
(10) The dumping-syndrome is a severe complication of gastric surgery after operations which destroy or weaken the sphincter mechanism of the pylorus.
(11) This appears to be caused by persistent reflux of gastric juice across a mechanically defective lower esophageal sphincter.
(12) During phase III of the interdigestive period maximal frequency of sphincter of Oddi phasic contractions blocks bile flow into the duodenum.
(13) Preliminary electromyography showed the external sphincter to be displaced from the anus in nine patients.
(14) Using concurrent videoendoscopy and manometry, glottal and upper esophageal sphincter (UES) responses to abrupt esophageal distention by air injection (10-60 mL) and balloon distention (1.5, 2.0, and 2.5 cm) were recorded simultaneously.
(15) Multiple factors contribute to the production of esophagitis in gastroesophageal reflux (GER), but the respective roles of esophageal (i. e. lower esophageal sphincter (LES) tone, peristalsis) and gastric factors (i. e. acid secretion and gastric emptying) are not well known.
(16) Pyloric sphincter pressure was assessed with water-perfused polyvinyl tubes.
(17) The frequent occurrence of delayed drainage in these asymptomatic post-cholecystectomy volunteers challenges the validity of the 45-min delayed drainage criterion for sphincter of Oddi dysfunction.
(18) Concurrent sphincteric incontinence and organic impotence are not uncommon; they can be caused by many congenital and acquired conditions.
(19) In both normals and patients, amplitude and duration of contractions were more at 5 cm than at 10 cm above the lower esophageal sphincter.
(20) This improvement in continence was not associated with any change in sphincter pressures or in the continence to rectally infused saline but was associated with significant improvements in rectal sensation.