(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).
Low
Definition:
() strong imp. of Laugh.
(v. i.) To make the calling sound of cows and other bovine animals; to moo.
(n.) The calling sound ordinarily made by cows and other bovine animals.
(n.) A hill; a mound; a grave.
(n.) Fire; a flame; a light.
(v. i.) To burn; to blaze.
(superl.) Occupying an inferior position or place; not high or elevated; depressed in comparison with something else; as, low ground; a low flight.
(superl.) Not rising to the usual height; as, a man of low stature; a low fence.
(superl.) Near the horizon; as, the sun is low at four o'clock in winter, and six in summer.
(superl.) Sunk to the farthest ebb of the tide; as, low tide.
(superl.) Beneath the usual or remunerative rate or amount, or the ordinary value; moderate; cheap; as, the low price of corn; low wages.
(superl.) Not loud; as, a low voice; a low sound.
(superl.) Depressed in the scale of sounds; grave; as, a low pitch; a low note.
(superl.) Made, as a vowel, with a low position of part of the tongue in relation to the palate; as, / (/m), / (all). See Guide to Pronunciation, // 5, 10, 11.
(superl.) Near, or not very distant from, the equator; as, in the low northern latitudes.
(superl.) Numerically small; as, a low number.
(superl.) Wanting strength or animation; depressed; dejected; as, low spirits; low in spirits.
(superl.) Depressed in condition; humble in rank; as, men of low condition; the lower classes.
(superl.) Mean; vulgar; base; dishonorable; as, a person of low mind; a low trick or stratagem.
(superl.) Not elevated or sublime; not exalted or diction; as, a low comparison.
(superl.) Submissive; humble.
(superl.) Deficient in vital energy; feeble; weak; as, a low pulse; made low by sickness.
(superl.) Moderate; not intense; not inflammatory; as, low heat; a low temperature; a low fever.
(superl.) Smaller than is reasonable or probable; as, a low estimate.
(superl.) Not rich, high seasoned, or nourishing; plain; simple; as, a low diet.
(n.) The lowest trump, usually the deuce; the lowest trump dealt or drawn.
(adv.) In a low position or manner; not aloft; not on high; near the ground.
(adv.) Under the usual price; at a moderate price; cheaply; as, he sold his wheat low.
(adv.) In a low mean condition; humbly; meanly.
(adv.) In time approaching our own.
(adv.) With a low voice or sound; not loudly; gently; as, to speak low.
(adv.) With a low musical pitch or tone.
(adv.) In subjection, poverty, or disgrace; as, to be brought low by oppression, by want, or by vice.
(adv.) In a path near the equator, so that the declination is small, or near the horizon, so that the altitude is small; -- said of the heavenly bodies with reference to the diurnal revolution; as, the moon runs low, that is, is comparatively near the horizon when on or near the meridian.
(v. t.) To depress; to lower.
Example Sentences:
(1) The extents of phospholipid hydrolysis were relatively low in brain homogenates, synaptic plasma membranes and heart ventricular muscle.
(2) Serum levels of both dihydralazine and metabolites were very low and particularly below the detection limit.
(3) This trend appeared to reverse itself in the low dose animals after 3 hr, whereas in the high dose group, cardiac output continued to decline.
(4) The technique is facilitated by an amazingly low tendency to bleeding.
(5) The rash presented either as a pityriasis rosea-like picture which appeared about three to six months after the onset of treatment in patients taking low doses, or alternatively, as lichenoid plaques which appeared three to six months after commencement of medication in patients taking high doses.
(6) When micF was cloned into a high-copy-number plasmid it repressed ompF gene expression, whereas when cloned into a low-copy-number plasmid it did not.
(7) Apparently, the irradiation with visible light of a low intensity creates an additional proton gradient and thus stimulates a new replication and division cycle in the population of cells whose membranes do not have delta pH necessary for the initiation of these processes.
(8) The low affinity of several N1-alkylpyrroleethylamines suggests that the benzene portion of the alpha-methyltryptamines is necessary for significant affinity.
(9) Simplicity, high capacity, low cost and label stability, combined with relatively high clinical sensitivity make the method suitable for cost effective screening of large numbers of samples.
(10) Aggregation was more frequent in low-osmolal media: mainly rouleaux were formed in ioxaglate but irregular aggregates in non-ionic media.
(11) Low birth weight, short stature, and mental retardation were common features in the four known patients with r(8).
(12) BL6 mouse melanoma cells lack detectable H-2Kb and had low levels of expression of H-2Db Ag.
(13) The level of gadd45 mRNA increased rapidly after X rays at doses as low as 2 Gy.
(14) The cumulative incidence of grade II and III acute GVHD in the 'low dose' cyclosporin group was 42% compared to 51% in the 'standard dose' group (P = 0.60).
(15) beta-Endorphin blocked the development of fighting responses when a low footshock intensity was used, but facilitated it when a high shock intensity was delivered.
(16) The extent of the infectious process was limited, however, because the life span of the cultures was not significantly shortened, the yields of infectious virus per immunofluorescent cell were at all times low, and most infected cells contained only a few well-delineated small masses of antigen, suggestive of an abortive infection.
(17) The extreme quenching of the dioxetane chemiluminescence by both microsomes and phosphatidylcholine, as a model phospholipid, implies that despite the low quantum yield (approx.
(18) This study compared the non-invasive vascular profiles, coagulation tests, and rheological profiles of 46 consecutive cases of low-tension glaucoma with 69 similarly unselected cases of high-tension glaucoma and 47 age-matched controls.
(19) A diplomatic source said the killing appeared particularly unusual because of Farooq lack of recent political activity: "He was lying low in the past two years.
(20) In animal experiments pharmacological properties of the low molecular weight heparin derivative CY 216 were determined.