(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).
Nadir
Definition:
(n.) That point of the heavens, or lower hemisphere, directly opposite the zenith; the inferior pole of the horizon; the point of the celestial sphere directly under the place where we stand.
(n.) The lowest point; the time of greatest depression.
Example Sentences:
(1) Following parturition, NONLAC cows averaged 4.0 d to negative EB nadir and 14.3 d to first ovulation.
(2) Seven days of constant light, however, reverses this diurnal variation such that plasma prolactin levels peak at 11:30 AM and reach a nadir at approximately 11:30 PM.
(3) Microsomal protein synthesis as measured by [3H]leucine incorporation was also depressed in a dose-dependent fashion; however, inhibition did not reach the nadir until day 4, 1 day after renal dysfunction was established.
(4) A trend to a phase-advance of cortisol nadir and melatonin peak was seen in the acutely ill depressed patients with abnormal DST, possibly indicating an involvement of the suprachiasmatic nuclei in the hypothalamus.
(5) The time-related incidence of these cells entities--the appearance of "dusk" and "bright" cells at 5 min, transitory domination of "bright" cells and the nadir of "dusk" cells at 20 min, sporadic recognition of "bright" cells, lack of "dusk" cells at 45 min and the absence of both cell forms at 180 min--displayed that LP-reactive response promptly appeared and rapidly ceased.
(6) In women, but not in men, there was a rise in the risk of falling from 45 years, peaking in the 55-59 year age group, and sinking to a nadir at ages 70-74.
(7) The binding is highest in the early morning and reaches a nadir in the late afternoon.
(8) Strict criteria for dose adjustments according to nadir counts were applied.
(9) One became azoospermic at week 16, while the other's total sperm counts continued declining and reached a nadir of 1.4 million by week 20.
(10) The WBC nadir occurred at a median of 10 days and the median time required for normalization of the WBC was 18 days.
(11) The main toxicity was haematological with delayed leucopenia and thrombopenia (nadir: week 6).
(12) Nadir values coincided with maximal toxic granulation of the neutrophils.
(13) The circadian rhythm observed in patients with intermittent claudication has early evening peaks and a nocturnal trough with a nadir occurring after midnight and before 0400.
(14) Portsmouth , still looking for their first home win under Tony Adams, dominated the first 25 minutes, when Nadir Belhadj was outstanding.
(15) Pre-treatment concentrations of P-FN were within the reference range and significantly higher than the nadir value (p less than 0.05).
(16) A model was constructed according to these two parameters that significantly describes ln (nadir WBC) (p = 0.001).
(17) Following spontaneous horizontal roving eye movement, both eyes deviated downward slowly from midposition, taking 1 to 2 seconds to reach the nadir.
(18) Griffiths replaced Nadir Ciftci for the start of the second half after a dismal first 45 minutes from the home side and Ronny Deila’s men continued to struggle, with Bitton sent off in the 67th minute after picking up his second yellow card.
(19) The second pulse was of slightly lower amplitude, reaching a maximum of 2.3 to 8.0 fold over the control value and 1.25 to 2.5 fold over the preceding nadir.
(20) The period from 2004-5 was the nadir: some American DJs even emigrated to Berlin, where the work prospects were better.