What's the difference between retract and retractor?
Retract
Definition:
(v. t.) To draw back; to draw up or shorten; as, the cat can retract its claws; to retract a muscle.
(v. t.) To withdraw; to recall; to disavow; to recant; to take back; as, to retract an accusation or an assertion.
(v. t.) To take back,, as a grant or favor previously bestowed; to revoke.
(v. i.) To draw back; to draw up; as, muscles retract after amputation.
(v. i.) To take back what has been said; to withdraw a concession or a declaration.
(n.) The pricking of a horse's foot in nailing on a shoe.
Example Sentences:
(1) Brain damage may be followed by a number of dynamic events including reactive synaptogenesis, rerouting of axons to unusual locations and altered axon retraction processes.
(2) Tottenham Hotspur’s £400m redevelopment of White Hart Lane could include a retractable grass pitch as the club explores the possibility of hosting a new NFL franchise.
(3) Any MP who claims this is not statutory regulation is a liar, and should be forced to retract and apologise, or face a million pound fine.
(4) During the first 15 to 20 min of metamorphosis the larval arms are retracted and resorbed into the aboral surface of the juvenile.
(5) • Written, oral and video statements of self-incrimination and self-renunciation by the detainees, apparently induced by the authorities, have been released through official media channels (for example, lawyer Zhang Kai was induced to make such a statement, which he later retracted).
(6) Duane's retraction syndrome is a congenital eye movement disorder characterized by a deficiency of abduction, mild limitation of adduction, with retraction and narrowing of the palpebral fissure on attempted adduction.
(7) Axonal trees display differential growth during development or regeneration; that is, some branches stop growing and often retract while other branches continue to grow and form stable synaptic connections.
(8) She said she was not worried by Rubio’s one-time position on his immigration bill, later retracted, that he could not support reform if it included citizenship for gay couples.
(9) Useful differential morphological criteria can be: star-like or transverse ring-shaped profile of isolated ulcerations, tubular ileocolic junction with retracted cecum and open valve, and uniformity of lesion in the comprehensive picture of the clinical case.
(10) Both require more brain retraction and have greater risk to the facial nerve than the translabyrinthine approach.
(11) Unlike posterior tympanoplasty, this technique makes it possible to meticulously remove the osteitic bone invariably found in the facial recess when there is infection of the retraction pocket.
(12) In the third patient laparotomy was applied owing to the bleeding from the retracted, cut uterine artery.
(13) Because of laboratory and clinical observation that recurrent nerve paralysis retracts the involved vocal cord from the midline, it was proposed that deliberate section of the recurrent nerve would improve the vocal quality of patients with spastic dysphonia.
(14) Seven to 30 days following axotomy the volume of the hypoglossal nucleus was significantly diminished, undoubtedly reflecting dendritic retraction (P less than 0.05).
(15) Contacts resulting in collapse and retraction were often accompanied by a rapid and transient burst of lamellipodial activity along the neurite 30-50 microns proximal to the retracting growth cone.
(16) At three, six, and twelve months after the first operation the development of retraction pockets was also studied.
(17) The anchoring wire can also be retracted and repositioned.
(18) The right occipital lobe is retracted laterally from the falx cerebri.
(19) These experiments demonstrated that accessory abducens is a primary controller of eye retraction through its axons to retractor bulbi.
(20) A commercial system for producing retracted compensators has been adapted to suit local needs, and is evaluated here.
Retractor
Definition:
(n.) A bandage to protect the soft parts from injury by the saw during amputation.
(n.) One who, or that which, retracts.
(n.) In breech-loading firearms, a device for withdrawing a cartridge shell from the barrel.
(n.) An instrument for holding apart the edges of a wound during amputation.
(n.) A muscle serving to draw in any organ or part. See Illust. under Phylactolaemata.
Example Sentences:
(1) Tension and intracellular free calcium concentration [( Ca2+]i) were measured simultaneously in single smooth muscle cells isolated from the anterior byssus retractor muscle (ABRM) of Mytilus edulis that were loaded with the fluorescent Ca2+ indicator fura-2.
(2) We present a computer-aided videodensitometric method for the determination of oxygen saturation in red blood cells flowing through capillaries of the hamster cheek pouch retractor muscle.
(3) New structures reported are mesoboscis retractor muscles, the formation of 3 ligament strands from the proboscis retractor muscles, a teloboscis inflator muscle, and conduit through the protrusor muscle sheath.
(4) We developed a new micro-iris retractor to achieve temporary intraoperative pupillary mydriasis in selected eyes undergoing pars plana vitreous surgery.
(5) These experiments demonstrated that accessory abducens is a primary controller of eye retraction through its axons to retractor bulbi.
(6) Inhibitory factor (IF), an extract of the bovine retractor penis muscle, when treated with acid, becomes a vasodilator with properties similar to endothelium-derived relaxing factor (EDRF).
(7) In our opinion, brachial plexus lesions following median sternotomy in cardiac surgery depend on the extent of sternal spread and the height of placement of the retractor in dependence of the rigidity of the rib cage.
(8) Weintraub and Aronson's (1962) formal measures of defensive language were used: nonpersonal references, negators, qualifiers, retractors, explaining expressions of feeling, and evaluators.
(9) Intracellular and extracellular electrodes were used to study spontaneous and impulse-linked release of transmitter at locust retractor unguis nerve-muscle synapses.2.
(10) 5: 423-429, 1973), appears to restrict blood flow by placing unnatural tension on the retractor muscle and by requiring an incision in the tip of the pouch.
(11) During each scratch cycle, the monoarticular knee extensor muscle is active when the limb rubs against the stimulated site, and there is rhythmic alternation between hip protractor and hip retractor muscle activity (Robertson et al., 1985).
(12) The pharyngeal retractor muscle of Helix lucorum is innervated by two symmetrical nerves which contain axons of two types forming myoneural junctions with the muscle cells.
(13) Interneurons are demonstrated in which membrane potential oscillations mirror the leg position or show correlation with the motoneuronal activity of the protractor and retractor coxae muscles during walking.
(14) The basis for this migration is postulated to be the anatomical relationships of the tarsus, postorbicular fascia, and lower eyelid retractors.
(15) Characteristics of the surgical techniques include 1) taking a transsylvian route; 2) retracting the M1 portion of the middle cerebral artery (occasionally the C1 portion of the internal carotid) medially with tapered brain retractors; and 3) approaching the aneurysm through and between perforators arising from the posterior cerebral artery in cases of high-placed basilar bifurcation.
(16) By quantitative sodium dodecyl sulfate-polyacrylamide gel electrophoresis, paramyosin:myosin heavy chain molecular ratios were calculated for three molluscan muscles:Aequipecten striated adductor, Mercenaria opaque adductor, and Mytilus anterior byssus retractor; and four arthropodan muscles:Limulus telson, Homarus slow claw.
(17) The stress that generated a remaining strain of 1 mm was about 80% of the maximum stress of the fixed flexible arm, and was a suitable indicator of the ability of a retractor under load.
(18) Medial entropion in this setting often coexists with lower eyelid retraction, and if a "spacer" of sclera or ear cartilage is to be inserted into the lower eyelid, it should be carried into the medialmost portion of the eyelid to recess the posterior lamellae, including the medial retractors, and allow the eyelid margin to return to its normal anatomic position.
(19) Effects of 5-hydroxytryptamine (5-HT) and forskolin on intracellular free calcium concentration [( Ca2+]i) were studied in suspensions of fura-2 loaded smooth-muscle cells from the anterior byssus retractor 'catch' muscle of Mytilus edulis.
(20) The relaxing effect of SKF 38393 on the catch contraction in the anterior byssus retractor muscle (ABRM) of Mytilus and the effect of SKF 38393 on the cyclic AMP (cAMP) levels in the ABRM were investigated.