Literatura científica selecionada sobre o tema "Masseter muscle Physiology"

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Artigos de revistas sobre o assunto "Masseter muscle Physiology"

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Franz, Leonardo, Luciana Travan, Miriam Isola, Gino Marioni, and Renzo Pozzo. "Facial Muscle Activity Patterns in Clarinet Players: A Key to Understanding Facial Muscle Physiology and Dysfunction in Musicians." Annals of Otology, Rhinology & Laryngology 129, no. 11 (June 2, 2020): 1078–87. http://dx.doi.org/10.1177/0003489420931553.

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Objectives: Facial muscle activity is crucial to controlling musical performance in wind instrument playing. Facial muscle dysfunctions are common in wind instrument players, dramatically affecting their professional musical activity and potentially leading to disabling symptoms. The aim of this pilot study on a cohort of healthy clarinetists was to use surface electromyography to identify the facial muscle activity patterns involved in stabilizing the mouthpiece, controlling emission and articulation during musical tasks in physiological conditions, also comparing muscle activity between less
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Hollowell, D. E., P. R. Bhandary, A. W. Funsten, and P. M. Suratt. "Respiratory-related recruitment of the masseter: response to hypercapnia and loading." Journal of Applied Physiology 70, no. 6 (June 1, 1991): 2508–13. http://dx.doi.org/10.1152/jappl.1991.70.6.2508.

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To test the hypothesis that a muscle that closes the jaw, the masseter, can be recruited by ventilatory stimuli, we studied the electromyographic activation of the masseter and genioglossus in seven normal awake males who were exposed in random order to progressive hyperoxic hypercapnia, inspiratory threshold loading (-40 cmH2O), and combined hypercapnia and loading. With hypercapnia, the masseter was generally recruited after the genioglossus had been activated. Once recruited, activation of both muscles increased linearly with increasing CO2. Combined hypercapnia and loading produced more ac
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Cairns, Brian E., James W. Hu, Lars Arendt-Nielsen, Barry J. Sessle, and Peter Svensson. "Sex-Related Differences in Human Pain and Rat Afferent Discharge Evoked by Injection of Glutamate Into the Masseter Muscle." Journal of Neurophysiology 86, no. 2 (August 1, 2001): 782–91. http://dx.doi.org/10.1152/jn.2001.86.2.782.

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Animal studies have suggested that tissue injury–related increased levels of glutamate may be involved in peripheral nociceptive mechanisms in deep craniofacial tissues. Indeed, injection of glutamate (0.1–1 M, 10 μl) into the temporomandibular region evokes reflex jaw muscle responses through activation of peripheral excitatory amino acid receptors. It has recently been found that this glutamate-evoked reflex muscle activity is significantly greater in female than male rats. However, it is not known whether peripheral administration of glutamate, in the same concentrations that evoke jaw musc
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Türker, Kemal S., and Melissa Jenkins. "Reflex Responses Induced by Tooth Unloading." Journal of Neurophysiology 84, no. 2 (August 1, 2000): 1088–92. http://dx.doi.org/10.1152/jn.2000.84.2.1088.

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The reflex response of the masseter muscle to the rapid unloading of a single maxillary incisor tooth was studied. Unloading of a static force of 2 N in the horizontal direction resulted in a short-latency excitation, inhibition, and long-latency excitation of masseter muscle activity occurring at latencies of approximately 13, 20, and 40 ms, respectively, with a corresponding change in bite force occurring slightly later in each case. Following the blocking of periodontal input by the injection of local anesthetic around the stimulated tooth, inhibitory responses were abolished. Therefore, it
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Ayada, Kentaro, Makoto Watanabe, and Yasuo Endo. "Elevation of histidine decarboxylase activity in skeletal muscles and stomach in mice by stress and exercise." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 279, no. 6 (December 1, 2000): R2042—R2047. http://dx.doi.org/10.1152/ajpregu.2000.279.6.r2042.

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The effects of different types of stress (water bathing, cold, restraint, and prolonged walking) on histidine decarboxylase (HDC) activity in masseter, quadriceps femoris, and pectoralis superficial muscles, and in the stomach were examined in mice. All of these stresses elevated gastric HDC activity. Although water bathing, in which muscle activity was slight, was sufficiently stressful to produce gastric hemorrhage and to increase gastric HDC activity, it produced no detectable elevation of HDC activity in any of the muscles examined. The other stresses all elevated HDC activity in all three
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Hollowell, D. E., and P. M. Suratt. "Mandible position and activation of submental and masseter muscles during sleep." Journal of Applied Physiology 71, no. 6 (December 1, 1991): 2267–73. http://dx.doi.org/10.1152/jappl.1991.71.6.2267.

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Movement of the mandible could influence pharyngeal airway caliber because the mandible is attached to the tongue and to muscles that insert on the hyoid bone. In normal subjects and patients with obstructive sleep apnea (OSA) we measured jaw position during sleep with strain gauges, as well as masseter and submental electromyograms, airflow, esophageal pressure, oximetry, electroencephalograms, and electrooculograms. Jaws of patients with OSA were open more than those of normal subjects at end expiration and opened further at end inspiration, particularly at the termination of apneas when the
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Evans, Marianna, Kevin Morine, Cyelee Kulkarni, and Elisabeth R. Barton. "Expression profiling reveals heightened apoptosis and supports fiber size economy in the murine muscles of mastication." Physiological Genomics 35, no. 1 (September 2008): 86–95. http://dx.doi.org/10.1152/physiolgenomics.00232.2007.

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Distinctions between craniofacial and axial muscles exist from the onset of development and throughout adulthood. The masticatory muscles are a specialized group of craniofacial muscles that retain embryonic fiber properties in the adult, suggesting that the developmental origin of these muscles may govern a pattern of expression that differs from limb muscles. To determine the extent of these differences, expression profiling of total RNA isolated from the masseter and tibialis anterior (TA) muscles of adult female mice was performed, which identified transcriptional changes in unanticipated
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Hakim, Akhlaq W., Xudong Dong та Brian E. Cairns. "TNFα Mechanically Sensitizes Masseter Muscle Nociceptors by Increasing Prostaglandin E2 Levels". Journal of Neurophysiology 105, № 1 (січень 2011): 154–61. http://dx.doi.org/10.1152/jn.00730.2010.

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TNFα induces mechanical sensitization of rat masseter muscle nociceptors, which takes 2–3 h to manifest and is mediated through activation of P55 and P75 receptors. This study was undertaken to determine whether TNFα induces nociceptor mechanical sensitization through the release of other algogenic substances such as glutamate, prostaglandin E2 (PGE2), and/or nerve growth factor (NGF), which have been shown to induce mechanical sensitization of muscle nociceptors. Masseter muscle homogenate levels of PGE2 and NGF were measured 3 h after injection of TNFα (1 μg) or vehicle control using commerc
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Eason, Jane M., Gail A. Schwartz, Grace K. Pavlath, and Arthur W. English. "Sexually dimorphic expression of myosin heavy chains in the adult mouse masseter." Journal of Applied Physiology 89, no. 1 (July 1, 2000): 251–58. http://dx.doi.org/10.1152/jappl.2000.89.1.251.

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Little is known regarding the role of androgenic hormones in the maintenance of myosin heavy chain (MHC) composition of rodent masticatory muscles. Because the masseter is the principal jaw closer in rodents, we felt it was important to characterize the influence of androgenic hormones on the MHC composition of the masseter. To determine the extent of sexual dimorphism in the phenotype of masseter muscle fibers of adult (10-mo-old) C57 mice, we stained tissue sections with antibodies specific to type IIa and IIb MHC isoforms. Females contain twice as many fibers containing the IIa MHC as males
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Schwarz, Peter B., and John H. Peever. "Dopamine triggers skeletal muscle tone by activating D1-like receptors on somatic motoneurons." Journal of Neurophysiology 106, no. 3 (September 2011): 1299–309. http://dx.doi.org/10.1152/jn.00230.2011.

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The dopamine system plays an integral role in motor physiology. Dopamine controls movement by modulation of higher-order motor centers (e.g., basal ganglia) but may also regulate movement by directly controlling motoneuron function. Even though dopamine cells synapse onto motoneurons, which themselves express dopamine receptors, it is unknown whether dopamine modulates skeletal muscle activity. Therefore, we aimed to determine whether changes in dopaminergic neurotransmission at a somatic motor pool affect motor outflow to skeletal muscles. We used microinjection, neuropharmacology, electrophy
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Mais fontes

Teses / dissertações sobre o assunto "Masseter muscle Physiology"

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Scutter, Sheila. "H-reflex in human masseter." Title page, contents and abstract only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09phs4377.pdf.

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Copies of author's previously published articles inserted. Bibliography: leaves 172-204. H-relexes are used to determine the reflex connections of muscle spindle afferents, the exitability of the motorneuron pool and the integrity of the reflex pathways. However, H-relexes are small and can be difficult to elicit in the masseter, limiting their use in the investigation of the masticatory system. This study investigated the recruitment of masseter motorneurons into the H-reflex, compared to the recruitment occuring during voluntary isometric biting, to determine the distribution of the effectiv
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Poliakov, Andrew Victor. "Stretch reflexes in human masseter /." Title page, table of contents and abstract only, 1994. http://web4.library.adelaide.edu.au/theses/09PH/09php766.pdf.

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Nordstrom, Michael Andrew. "Functional characteristics of motor units in human masseter /." Title page, contents and abstract only, 1988. http://web4.library.adelaide.edu.au/theses/09PH/09phn832.pdf.

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Raoul, Gwénaël. "Plasticité du masseter humain : relation entre les chaînes lourdes de myosine et la dysmorphose dento-maxillo-faciale." Thesis, Lille 1, 2008. http://www.theses.fr/2008LIL10124/document.

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Les 161 recueils de masséter (161 gauche 36 droite) ont intéressé des patients lors du traitement chirurgical de leur malocclusion. Les 161 patients sont regroupés selon l'analyse céphalométrique de Delaire informatisée. L'étude des chaînes lourdes de myosine a été effectuée sur 28 échantillons par électrophorèse (SDS-PAGE) et western-blot. L'immunomarquage a été réalisé sur les 197 biopsies (côté gauche 161 et côté droit 36) et permet d'identifier 4 groupes de fibres du masséter humain (l, Hybride, II, NéoAtrial) selon leur pourcentage et leur surface moyenne. Nous avons réalisé des tests de
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Scutter, Sheila Doreen. "H-reflex in human masseter / by Sheila Doreen Scutter." Thesis, 1999. http://hdl.handle.net/2440/19483.

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Copies of author's previously published articles inserted.<br>Bibliography: leaves 172-204.<br>xi, 211 leaves : ill. (some col.) ; 30 cm.<br>H-relexes are used to determine the reflex connections of muscle spindle afferents, the exitability of the motorneuron pool and the integrity of the reflex pathways. However, H-relexes are small and can be difficult to elicit in the masseter, limiting their use in the investigation of the masticatory system. This study investigated the recruitment of masseter motorneurons into the H-reflex, compared to the recruitment occuring during voluntary isometric b
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