(n.) That by which a lever is sustained, or about which it turns in lifting or moving a body.
(n.) An accessory organ such as a tendril, stipule, spine, and the like.
(n.) The horny inferior surface of the lingua of certain insects.
(n.) One of the small, spiniform scales found on the front edge of the dorsal and caudal fins of many ganoid fishes.
(n.) The connective tissue supporting the framework of the retina of the eye.
Example Sentences:
(1) It is now a well-known fact that the human body is able to use luminous stimulation for aims other than sight; the pineal gland, though no longer directly sensitive to light as in lower animals, is nevertheless the fulcrum of a complex neuro-endocrine system which makes an interaction between light and the human body possible by means of the production of a number of substances of which melatonin is the most widely investigated.
(2) These results are consistent with the interpretation of DF as a zero reference point or fulcrum about which accommodative effort varies.
(3) The letter identified a single point, OcC point (Cervera's occlusal point), as the primary fulcrum from which to perform a correct cephalometric superimposition in order to examine the patient's anticipated growth.
(4) Mayor Rahm Emanuel, the former top adviser to Barack Obama suddenly facing a runoff for re-election, remained at the political fulcrum of a mounting campaign both on social media and the streets of Chicago, where demonstrations were planned for Saturday outside what coordinated campaigners described as mirroring a CIA “black site”.
(5) Two details distinguish this incision from other sutureless closures: the fulcrum in the crotch of the V provides easier access to the anterior chamber for instrument manipulation, and the termination of the scleral tunnel entry posterior to the cornea lessens the likelihood of corneal folds that may interfere with visualization during surgery.
(6) Their firm attachment to the ciliary epithelium and the great number of intercellular junctions known as mechanical structures lend further support to our concept that these structures function as a fulcrum in the process of accommodation.
(7) In case of occlusion, the mandible is elevated by the muscles of mastication with T. M. J. as the fulcrum point, and at this time, the masticatory force concentrated mainly on the dental arch is absorbed into the jaw bone through the periodontal tissues.
(8) The movements and the fulcrums of the prosthesis were changed by the presence of simulated retained roots posterior to the distal abutment.
(9) 10.25pm BST 56 mins Diskerud has done well to be a fulcrum of US attacking play in this half, and Donovan has drifted out to the right to find some space to run at the defense.
(10) The nitrogen of an allylic amine can serve as the fulcrum for stereocontrolled delivery of oxygen to an adjacent trigonal site, and cis-hydroxyamino sugars can thus be prepared.
(11) The shelf attachment to the main maxillary process is progressively undercut by epithelial invagination, producing a fulcrum for shelf elevation.
(12) Standing permanently on guard at the fulcrum of competing privatised arms of the state, armed with his suitcase of his rivals' commercial secrets, is a more tedious occupation.
(13) This is to be avoided because much larger levator resections are required when this ligament's support to the upper lid and the fulcrum effect for the levator are lost.
(14) Due to the superior displacement characteristics of the TMJ, the condyle does not act as the fulcrum in mandibular kinetics.
(15) However, Scholes believes it is the system, rather than the man preferred as the fulcrum of United’s attack, that is flawed.
(16) Rallying supporters at a phone bank on the eve of voting on Monday, Gardner, a congressman, called Colorado the “tip of the spear, the fulcrum of power”.
(17) The instrument differentiated between lateral and rotational parietal bone movements around the fulcrum of the suture.
(18) "Someone has to do it and the ideal would be that you chose the discrete broadcaster of a devolved nation at the fulcrum of the issue," Woodward said.
(19) It was his personality that made Heidelberg a fulcrum of a growing new scientific self-assurance that had no precedent in clinical psychiatry which no longer needed the disciplines of neuropathology and neurophysiology as pillars of support to gain recognition among the experts.
(20) Now the US build a little more inventively with Altidore as the fulcrum and ultimately the intended target of a Johnson cross.
Nucleus
Definition:
(n.) A kernel; hence, a central mass or point about which matter is gathered, or to which accretion is made; the central or material portion; -- used both literally and figuratively.
(n.) The body or the head of a comet.
(n.) An incipient ovule of soft cellular tissue.
(n.) A whole seed, as contained within the seed coats.
(n.) A body, usually spheroidal, in a cell or a protozoan, distinguished from the surrounding protoplasm by a difference in refrangibility and in behavior towards chemical reagents. It is more or less protoplasmic, and consists of a clear fluid (achromatin) through which extends a network of fibers (chromatin) in which may be suspended a second rounded body, the nucleolus (see Nucleoplasm). See Cell division, under Division.
(n.) The tip, or earliest part, of a univalve or bivalve shell.
(n.) The central part around which additional growths are added, as of an operculum.
(n.) A visceral mass, containing the stomach and other organs, in Tunicata and some mollusks.
Example Sentences:
(1) Microionophoretically applied excitatory amino acids induced firing of extracellularly recorded single units in a tissue slice preparation of the mouse cochlear nucleus, and the similarly applied antagonist 2-amino-5-phosphonovalerate (2APV) was demonstrated to be a selective N-methyl-D-aspartate (NMDA) receptor antagonist.
(2) The present results provide no evidence for a clear morphological substrate for electrotonic transmission in the somatic efferent portion of the primate oculomotor nucleus.
(3) In the caudal spinal trigeminal nucleus (Vc), the collaterals of one half of the periodontium afferent fibers terminated mainly in lamina V at the rostral and middle levels of Vc.
(4) It is concluded that in the mouse model the ability of buspirone to reduce the aversive response to a brightly illuminated area may reflect an anxiolytic action, that the dorsal raphe nucleus may be an important locus of action, and that the effects of buspirone may reflect an interaction at 5-hydroxytryptamine receptors.
(5) hypoglossal nucleus), whereas in other areas the angiotensinogen gene was expressed only in a certain population of glial cells.
(6) Local application of 8-OH-DPAT (0-5 micrograms) into the median raphe nucleus, facilitated male rat sexual behavior, as evidenced by a decrease in number of intromissions preceding ejaculation and in time to ejaculation.
(7) In addition, lightly immunostained cells were distinguished in the caudal portion of the hypothalamic arcuate nucleus, area of tuber cinereum, retrochiasmatic area, and rostral portion of the paraventricular thalamic nucleus after colchicine treatment.
(8) Arising of the nucleus from a polyheteronomous nucleoid of proeukaryotes.
(9) It is possible that the IgE that linked abnormally with the propofol had specific binding sites for the phenyl nucleus and the isopropyl groups, which are present in propofol and many other drugs.
(10) We conclude that neuronal activities in the region of the retrofacial nucleus are important both in the integration of stimuli from the central chemoreceptors and in defining the discharge patterns of respiratory neurons.
(11) A 68 year-old man with a history of right thalamic hemorrhage demonstrated radiologically in the pulvinar and posterior portion of the dorsomedian nucleus developed a clinical picture of severe physical sequelae associated with major affective, behavioral and psychic disorders.
(12) While the heaviest anterogradely labeled ascending projections were observed to the contralateral ventral posterolateral nucleus of the thalamus, pars oralis (VPLo), efferent projections were also observed to the contralateral ventrolateral thalamic nucleus (VLc) and central lateral (CL) nucleus of the thalamic intralaminar complex, magnocellular (and to a lesser extent parvicellular) red nucleus, nucleus of Darkschewitsch, zona incerta, nucleus of the posterior commissure, lateral intermediate layer and deep layer of the superior colliculus, dorsolateral periaqueductal gray, contralateral nucleus reticularis tegmenti pontis and basilar pontine nuclei (especially dorsal and peduncular), and dorsal (DAO) and medial (MAO) accessory olivary nuclei, ipsilateral lateral (external) cuneate nucleus (LCN) and lateral reticular nucleus (LRN), and to a lesser extent the caudal medial vestibular nucleus (MVN) and caudal nucleus prepositus hypoglossi (NPH), and dorsal medullary raphe.
(13) In contrast to this, adrenalectomy decreased ANP levels markedly in the organum vasculosum laminae terminalis and preoptic periventricular nucleus, which are reportedly involved in the central regulation of salt and water homeostasis.
(14) The shape of the nucleus changes from ovoid to a distinctive, radially splayed lobulated structure.
(15) Immunocytochemical analysis also suggested that bFGF immunoreactivity was present in the nucleus as well as the cytoplasm of astrocytes and CA2 neurons.
(16) The effect of Y-516 on the hyperactivity induced by dopamine injected bilaterally into the nucleus accumbens was compared with those of clocapramine (CCP), haloperidol (HPD) and chlorpromazine (CPZ).
(17) Moderately differentiated tumor revealed a wider range of nucleus size, less clustering (coefficient--3.59) and more hyperchromatic (70.1%) and "bare" (49.4%) nuclei and large nucleoli (22.2%).
(18) The majority of intensively stained and densely packed cells have been observed in tv nucleus.
(19) Following electrical stimulation of the hypothalamic paraventricular nucleus (PVN) area, 21% of the neurons were orthodromically excited, 6% were inhibited and 2.5% were antidromically activated.
(20) Proenkephalin A-related immunoreactive neuronal perikarya were detected in the central gray, reticular formation, nucleus raphes, trapezoid body, nucleus parabrachialis lateralis and medialis, nucleus spinalis nervi trigemini, nucleus dorsalis nervi vagi, and in the nucleus tractus solitarii.