(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.
(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).
(n.) One of the leaves of the corolla, or the colored leaves of a flower. See Corolla, and Illust. of Flower.
(n.) One of the expanded ambulacra which form a rosette on the black of certain Echini.
(1) Primin itself was obtained from Primula elatior and from the petals (corollas) of Primula obconica.
(2) Osmotic gradient across the membrane of nonsonicated liposomes and rose petal protoplasts are shown to induce swelling.
(3) The prosthesis is fixed by the interaction of magnetic pondermotive forces between two soft petals of a magnetoelastomer.
(4) In agamous-1, stamens to petals; in apetala2-1, sepals to leaves and petals to staminoid petals; in apetala3-1, petals to sepals and stamens to carpels; in pistillata-1, petals to sepals.
(5) They gradually displayed active membrane pseudopodia, thorn-like processes and petal-like ruffles after 2 h to 4 h of cultivation.
(6) The method was used to analyze the free amino acid pool in carnation petals.
(7) The highest glucosyltransferase activity was found in petals of opening flowers of young plants.
(8) When a variety of shotguns were tested, it was found that one weapon with a very short barrel and cylinder bore did not exhibit petal spread until a range of 30 cm was reached.
(9) Two petal mRNA classes were identified that are present at elevated levels relative to other organs.
(10) This study explores the extent of mild to significant malnutrition in the squatter settlement of Kampung Baiduri located adjacent to an industrial area in Petaling Jaya.
(11) 3R-[2-(14)C]Mevalonate was incorporated into geranyl and neryl beta-d-glucosides in petals of Rosa dilecta in up to 10.6% yield, and the terpenoid part was specifically and equivalently labelled in the moieties derived from isopentenyl pyrophosphate and 3,3-dimethylallyl pyrophosphate.
(12) In the case of the Kalanchoe rhythm, mainly the process of the petal opening is affected.
(13) In the electron microscope these complexes appear as a rosette of petals.
(14) Shotcup petal abrasions centered around a shotgun wound of entrance are generally thought to occur at a range of 30 to 90 cm.
(15) Yuri's gaze turns back to the sky, peppered now with dry fallen leaves (a premonition, perhaps, of the petals cast before the viceroy in A Passage to India).
(16) Each molecule appeared to be composed of two kinds of particles, with one larger central particle and smaller peripheral particles and had shapes resembling that of a flower with 8 or 10 "petals".
(17) But I hear it constantly from some of the precious petals, can I say, some of the precious petals in the science fraternity, and if you can’t guess, I won’t accept it.” Australia had a dedicated science portfolio in cabinet since the 1930s until Abbott’s decision to fold the role into Macfarlane’s purview.
(18) In the families of flowering plants in which these organs occur, they are patterned with the sepals in the outermost whorl or whorls of the flower, with the petals next closest to the center, the stamens even closer to the center, and the carpels central.
(19) The programmed senescence of carnation (Dianthus caryophyllus L.) petals requires active gene expression and is associated with the expression of several senescence-related mRNAs.
(20) In petunia, the gene Po regulates the expression of CHI in anthers: PoPo petunia lines contain CHI enzyme activity in petals and anthers, whereas popo lines contain the CHI enzyme only in petals but not in anthers.