(n.) The tip, top, point, or angular summit of anything; as, the apex of a mountain, spire, or cone; the apex, or tip, of a leaf.
(n.) The end or edge of a vein nearest the surface.
Example Sentences:
(1) After 1 year, anesthesia was induced with chloralose and an electrode catheter placed at the right ventricular apex.
(2) Following injections of HRP into the apex of the heart, the sinoatrial (SA) nodal region and the ventral wall of the right ventricle, we observed that HRP-labeled sympathetic neurons were localized predominantly in the right stellate ganglia, and to a lesser extent, in the right superior and middle cervical ganglia, and left stellate ganglia.
(3) It is therefore suggested that salt water adaptation triggers a cellular reorganization of the epithelium in such a way that leaky junctions (a low resistance pathway) appear at the apex of the chloride cells.
(4) When HRP was injected in the left ventricular wall or the apex, few labeled neurons were identified in the DMN.
(5) The length of the diaphragmatic wall of the heart in both the right and left ventricle was equal to the sum of the length of the inflow tract and the thickness of the ventricular wall at the apex.
(6) However, the external muscle fibers of the ventricles ran clockwise from base to apex toward the center of the vortex, which had a striking resemblance to the normal rather than the mirror image pattern.
(7) In the RAO view with the collimator flat against the chest there was better resolution of the cardiac apex.
(8) Their proliferating regions are located in the apex tip, where the various cells originate.
(9) In these tissues, the viral DNA replicated at the site of inoculation and was transported first to the roots, then to the shoot apex and to the neighboring leaves and the flowers.
(10) The vertical distances were compared with measurements taken from periapical radiographs between the apex of each mesial root and the superior border of the mandibular canal prior to sectioning.
(11) Three of six patients in whom treatment failed had disease at the vaginal apex.
(12) We recommend this skin incision for young patients with pneumothorax if the chest CT scan confirms that the bullae or blebs are localized to the apex of superior segment of the lower lobe.
(13) MRI only offered advantages over CT in lesions of the orbital apex, the upper part of the orbit, and in the diagnosis of inflammatory processes.
(14) In the accelerated protocol, one, two, and then three extrastimuli were introduced at each of three basic drive train cycle lengths (350, 400, and 600 msec) at the right ventricular apex; the procedure was repeated at a second right ventricular site.
(15) Magnetic resonance imaging of the chest in patients with lung cancer is being investigated, but current studies comparing it with CT demonstrate no definite advantage at this time, with the possible exception of the lung apex in which T1 weighted thin-section coronal views are useful.
(16) The apex to base lung distribution of 99Tcm-C and 81Krm appeared to be similar.
(17) If a web has a low apex angle and the skin is elastic, the length-width ratio may be as great as 1.5:1.
(18) Double product increase was inferior to that recorded before atenolol administration; the difference became significant after 2 months and reached its apex after 6 months of treatment.
(19) HRCT scans at the apex of the thorax in all nine patients scanned at this level showed that extrapleural fat with interspersed vessels accounted for most of the plain radiographic opacity.
(20) To determine if anodal excitation during bipolar stimulation facilitates the initiation of sustained monomorphic ventricular tachycardia, nonsustained polymorphic ventricular tachycardia, or repetitive ventricular responses, both bipolar and cathodal unipolar programmed ventricular stimulation with one to three extrastimuli delivered during ventricular pacing at two rates from the right ventricular apex were performed in 28 patients evaluated for spontaneous sustained ventricular tachycardia or ventricular fibrillation (11 patients), nonsustained tachycardia (eight patients), or syncope (nine patients).
Tip
Definition:
(n.) The point or extremity of anything; a pointed or somewhat sharply rounded end; the end; as, the tip of the finger; the tip of a spear.
(n.) An end piece or part; a piece, as a cap, nozzle, ferrule, or point, applied to the extreme end of anything; as, a tip for an umbrella, a shoe, a gas burner, etc.
(n.) A piece of stiffened lining pasted on the inside of a hat crown.
(n.) A thin, boarded brush made of camel's hair, used by gilders in lifting gold leaf.
(n.) Rubbish thrown from a quarry.
(v. t.) To form a point upon; to cover the tip, top, or end of; as, to tip anything with gold or silver.
(v. t.) To strike slightly; to tap.
(v. t.) To bestow a gift, or douceur, upon; to give a present to; as, to tip a servant.
(v. t.) To lower one end of, or to throw upon the end; to tilt; as, to tip a cask; to tip a cart.
(v. i.) To fall on, or incline to, one side.
(n.) A light touch or blow; a tap.
(n.) A gift; a douceur; a fee.
(n.) A hint, or secret intimation, as to the chances in a horse race, or the like.
Example Sentences:
(1) This study examined both the effect of variations in optical fiber tip and in light wavelength on laser-induced hyperthermia in rat brain.
(2) Sickle and normal discocytes both showed membrane elasticity with reversion to original cell shape following release of the cell from its aspirated position at the pipette tip.
(3) The complication might have been prevented by measurements of U and I, reflecting changes in impedance or by measurements of catheter tip temperature (T).
(4) But what about phenomena such as table tipping and Ouija boards?
(5) The relationship between technique of obtaining Papanicolaou smears, presence of endocervical cells, and rate of cervical neoplasia was studied by comparing an endocervical and ectocervical nylon brush (Bayne brush), Ayre spatula plus endocervical brush, and spatula plus cotton-tipped swab in a randomized, prospective trial involving 11,061 patients.
(6) Eight electrodes of different size and tip characteristics were evaluated at different temperatures and time settings, both in vitro and in vivo.
(7) Neither was the intra-VMH infusion of MA effective if: (i) the rats were not primed with estrogen; (ii) the tips of the cannulae were outside the VMH; or (iii) it was preceded by an intra-VMH infusion of the alpha 1b-antagonist, chloroethylclonidine (CEC).
(8) "We know that a country has tipped when local-to-local connections outnumber local to foreign," he added.
(9) An inner cannula containing PGE2 or PGF2alpha at its tip was inserted into the previously implanted outer cannula.
(10) The linear flow accelerator failed to prevent, but did delay, catheter tip recoil in proportion to the prolongation of contrast medium injection time.
(11) The inter-connecting linkage system develops postnatally, and the 'tip-linkages' are already found in one-week-old mice, suggesting that the critical organization of the micromechanics of the stereocilia matures rapidly during the postnatal period.
(12) A new simplified technique for evaluating the internal pudendal artery and the penile vessels is described using a new catheter configuration with a very short 90 degrees-angled tip.
(13) Tipping petrol on a fire isn’t going to get the heat out of it,” he told ABC radio.
(14) When used in snail neurones such electrodes gave very similar pHi values to those recorded simultaneously by recessed-tip glass micro-electrodes.
(15) This study demonstrates the limitations of the Q-Tip test and reconfirms the need for more sensitive and specific urodynamic investigations of the incontinent woman.
(16) Following orthodontic treatment the canine's incisal edge occlusion demonstrates the tip and torque present in the appliance that was used.
(17) After 4 weeks of in vivo growth, extensive growth of arborizing ducts was apparent in recombinants composed of urogenital sinus mesenchyme and a single adult prostatic ductal tip.
(18) Conversely, serum starvation decreased TIP levels within 1 hr.
(19) He unleashes a scorching drive from about 18 yards, which Joe Hart tips wide via his right post.
(20) One patient harbored a basilar trunk aneurysm, 1 an aneurysm of the proximal posterior cerebral artery, 3 an aneurysm of the superior cerebellar artery, and 10 an aneurysm at the basilar tip.