(v. t.) To draw together; to render narrower or smaller; to bind; to cramp; to contract or cause to shrink.
Example Sentences:
(1) There were two recurrent P. (1 Tbc, 1 viral) and no recurrent constriction.
(2) L660,711 had no significant effects on epinephrine- or vasopressin-induced arteriolar constriction.
(3) Myogenic constrictions and dilations was observed when IP was increased (greater than 60 cmH2O) and decreased (less than 60 cmH2O), respectively.
(4) Baroreflex function was studied in conscious early phase (less than 6 weeks) two-kidney, one-clip hypertensive rats before and 24 hours after surgical reversal of hypertension by removal of the constricting renal artery clip or after pharmacological reduction of blood pressure by an infusion of hydralazine or captopril.
(5) A series of hierarchical multiple regressions revealed the effects of Surgency, Agreeableness, Conscientiousness, Emotional Stability, and Intellect on evoking upset in spouses through condescension (e.g., treating spouse as stupid or inferior), possessiveness (demanding too much time and attention), abuse (slapping spouse), unfaithfulness (having sex with others), inconsiderateness (leaving toilet seat up), moodiness (crying a lot), alcohol abuse (drinking too much alcohol), emotional constriction (hiding emotions to act tough), and self-centeredness (acting selfishly).
(6) Neither the first- (A1) or second-order arterioles (A2) nor the first- (V1) or second-order venules (V2) constricted significantly to angiotensin II.
(7) When the same dose of ISO was administered to rats with aortic constriction the rise in labelled Ca uptake by the hypertrophied myocardium of the left ventricle was greatly reduced.
(8) We studied DNA (mtDNA) replication in adult female rat hearts undergoing hypertrophy secondary to constriction of the ascending aorta.
(9) 6 patients had thickened pericardium, and 3 had constrictive features.
(10) Clonidine and methysergide constrict the rabbit auricular artery by activating smooth muscle alpha-adrenoceptors.
(11) Electron microscopy in one case demonstrated typical intraneuronal accumulations of neurofilaments with regular constrictions.
(12) The rise in pressure approximated the sum of the rises caused by removal of the papilla alone and by renal artery constriction alone, consistent with the idea of two mechanisms being at work in this model.
(13) Transient peripheral vasomotor constriction and heart rate increases were initiated within an 8- to 12-sec period following target detection with the predictable schedule, with subjects evincing greater responsivity than their nonpredictable schedule counterparts.
(14) Data are constricted by the movement out of the area in the end stage of disease, which is only partially solved by tracking with community health workers.
(15) The in vivo synthesis rates of myosin isozyme heavy chains beta and alpha were measured in right ventricular (RV) muscle at 2 and 4 days following pulmonary artery constriction in rabbits, together with measurements of their relative mRNA levels.
(16) Aspiration is prevented by constriction of the thyroarytenoid muscle which provides a valved upper end of the tube.
(17) When tested in the guinea pig, 2a exhibited no effects on blood pressure and no broncho-constriction or dilation activity.
(18) However, certain other echocardiographic abnormalities of left ventricular posterior wall motion and interventricular septal motion and a high E-Fo slope were suggestive of constriction.
(19) The left anterior descending coronary artery of dogs and the right common carotid artery of rabbits were subjected to partial constriction with suture thread (40-60% reduction in transluminal diameter).
(20) A previously described laminectomy technique was modified by the addition of spinal plating to avoid the occurrence of constrictive fibrosis.
Sphincter
Definition:
(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.