What's the difference between constrict and constrictor?
Constrict
Definition:
(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.
Constrictor
Definition:
(n.) That which constricts, draws together, or contracts.
(n.) A muscle which contracts or closes an orifice, or which compresses an organ; a sphincter.
(n.) A serpent that kills its prey by inclosing and crushing it with its folds; as, the boa constrictor.
Example Sentences:
(1) The dog and the pig also have an endoperoxide-sensitive constrictor system activated by the 11,9-(epoxymethano) analogue of PGH2 and, of particular note, ICI 79939 and its 11-oxo analogue.
(2) Most often, constrictor fibres follow the course of the pterygo-palatine nerve, when dilator fibres follow the infraorbital nerve.
(3) Utilization of inert materials like teflon, makrolon, and stainless steel warrants experimental and possibly clinical application of the developed small constrictor.
(4) The constrictor may be used for studies on the development of collaterals as well as on therapeutic measures in chronic ischemia of the myocardium.
(5) It is possible that the steroids, the beta-lipoprotein, and the tranylcypromine produced constrictor responses to 5HT by the same mechanism (inhibition of cerebrovascular monoamine oxidase).
(6) One such condition is the pulmonary constrictor response to hypoxia.
(7) To determine whether limitation of subendocardial blood flow after exercise is a determinant of such dysfunction in the presence of chronic coronary stenosis, nine conscious chronically instrumented dogs having an Ameroid constrictor were studied before, during, and after treadmill runs that induced regional ischemia.
(8) When there is turbulence in the vein lumen the volume of reflux becomes excessive and causes so much adjustment that constrictor tone is abolished.
(9) These local glomerular constrictor actions of LTD4 support the possibility that this eicosanoid might play an important intermediary role in the functional impairment accompanying some forms of inflammatory injury.
(10) FPL 55712 at concentrations of 10(-6)M and 10)-5)M showed dose-dependent inhibition of the constrictor responses of the artery to prostaglandin F2 alpha.
(11) Stimulation with pulses of 0.1 msec or more resulted in a constrictor response followed by a dilator response.
(12) Potential coronary constrictors considered included norepinephrine, PGF2 alpha, thromboxane A2, and high K+.
(13) Frusemide, an inhibitor of sodium-potassium-chloride (Na-K-Cl) cotransport, has been shown to inhibit the airway response to several constrictor stimuli in asthmatic subjects.
(14) The constrictor response to L-NNA and the blockade of the ACh-induced relaxation by both L-NNA and removal of endothelium are consistent with an involvement of nitric oxide.
(15) Endothelin, a potent endogenous vaso-constrictor, is derived from its biosynthetic precursor by proteolytic degradation.
(16) The contractile activity of these peptides was compared to that of three nonpeptidergic constrictors: noradrenaline (NA), serotonin (5-hydroxytryptamine, 5-HT) and prostaglandin F2 alpha (PGF2 alpha) (10(-8)-10(-4) M).
(17) The blunted constrictor response in the trained animals suggests that exercise may be useful in reducing epicardial coronary vasoconstriction, which is thought to be important in some patients with coronary artery disease.
(18) However, there is increasing evidence that it is a metabolically active tissue that may modulate the function of the underlying smooth muscle by metabolism and regulation of mediators and the production of relaxant, constrictor, or chemotactic factors.
(19) The i-NANC nerves may exert a modulating effect on bronchoconstriction, and a functional defect would presumably lead to an exaggerated response to constrictor stimuli.
(20) Repeated boluses of alpha,beta-meATP resulted in complete desensitization of the constrictor response to beta,gamma-meATP, but a small vasodilator response remained indicating unopposed stimulation of P2y receptors.