What's the difference between constrictor and tighten?
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.
Tighten
Definition:
(v. t.) To draw tighter; to straiten; to make more close in any manner.
Example Sentences:
(1) In a clear water reservoir built in ready construction after a working-period of five months quite a lot of slime could be found on the expansion joint filled with tightening compound on the base of Thiokol.
(2) Under pressure from many backbenchers, he has tightened planning controls on windfarms and pledged to "roll back" green subsidies on bills, leading to fears of dwindling support for the renewables industry.
(3) Since then, Republican activists and enthusiasts have been energised and polls have tightened.
(4) With the City's regulatory framework being tightened by the coalition government, which is disbanding the FSA and handing control of bank oversight to the Bank of England , there is concern in London that the US politicians are being opportunistic.
(5) We need to stop making excuses for them: But it is up to the state to close the loopholes Yes, the state must work continually to tighten and simplify the tax regime, which is a deliberate mess keeping an entire industry of accounting firms and tax lawyers fed.
(6) A simplified procedure is described whereby tissue is removed via a posterior eyelid approach so that the eyelid may be tightened both horizontally and vertically, thus inverting the punctum and fixating it in the lacrimal lake.
(7) Increased slippage torques of approximately 100 per cent were noted in all interfaces at low values of tightening torque (6 and 8 N m) of the wing-nut clamp and improvements of not less than 50 per cent were obtained at higher tightening torques (10 and 12 N m) on the wing-nut clamp.
(8) After the 2009 shooting, the US military tightened security at bases nationwide.
(9) Several procedures have been developed to restore closure of the paralyzed upper eyelid (implantation of gold weights or open wire springs) or to correct lower lid lagophthalmos and ectropion (lower lid tightening with a Bick procedure or insertion of a closed eyelid spring).
(10) Otherwise, the United States will continue to work with allies and partners to tighten national and international sanctions to impede North Korea's nuclear and missile programmes."
(11) Tightening compounds which were used in the sphere of drinking-water led to a microbial settlement that differs in points of quantity and quality depending on the kind of material.
(12) As border security has been tightened in recent years, and the flow of migrant workers has declined, routes across the border have been controlled by violent drug cartels.
(13) Emanuel has received backing from establishment Democrats and business leaders who have praised his financial acumen, including attracting new businesses and budget tightening to attempt to close a roughly $300m operating deficit.
(14) Installation of an irrigation infusion in the postoperative period and well-tightened connections help avoid such complications as thrombus formation, bleeding or air embolism.
(15) | Hugh Muir Read more Wherever Labour people gather to discuss how to break out of the vice tightening around the party, answers fail amid sighs of utter despair.
(16) Labour sources said they also wanted to make sure that the legislation was tightened up so jobseekers' regular rights of appeal, separate to the court of appeal judgment, were not also trampled on by the new law.
(17) All of this has been accompanied by ideological tightening across academia, religion, even state media and officialdom itself: a sort of sterilisation of the environment.
(18) Plans to tighten regulation of Britain's main banks will also include "living wills", which the FSA said was moving ahead quickly.
(19) Tightening of clasps already in contact with a tooth frequently produces adverse changes.
(20) They are already under pressure from their regulator, the Financial Services Authority, to tighten their lending criteria.