Muscle Spindles
Mostrando 1-12 de 108 artigos, teses e dissertações.
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1. A single bout of exercise with a flexible pole induces significant cardiac autonomic responses in healthy men
OBJECTIVES: Flexible poles can provide rapid eccentric and concentric muscle contractions. Muscle vibration is associated with a "tonic vibration reflex” that is stimulated by a sequence of rapid muscle stretching, activation of the muscle spindles and stimulation of a response that is similar to the myotatic reflex. Literature studies analyzing the acute
Clinics. Publicado em: 2014-09
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2. Células satélites e fusos neuromusculares em músculos estriados de ratos desnervados por longo período / Satellite cells and neuromuscular spindles in skeletal muscles in long term denervated rats
O músculo estriado esquelético apresenta em sua constituição células satélites (CS) que se encontram em estado quiescente localizadas entre o sarcolema e a lâmina basal das fibras musculares. As CS podem ser ativadas, diferenciando em mioblastos, contribuindo para regeneração e/ou crescimento do tecido muscular. Os Fusos neuromusculares são mecanor
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2012
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3. Efeitos de diferentes freqüências e amplitudes de vibração unilateral do tendão calcâneo na orientação postural e no reflexo H em humanos / Effects of Achilles tendon vibration of different frequencies and amplitudes on postural orientation and H reflex in humans
A vibration applied to a muscle tendon increases the firing frequency of afferents of types Ia and II innervating muscle spindles, and hence affects the spinal cord circuits and this can affect motor control. The aim of this study was to analyze the effect of vibrations of two frequencies (15 and 80Hz) and two amplitudes (1 and 2.5 mm) applied to the right A
Publicado em: 2010
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4. Motor Control Modeling to Entropy Generation Minimization in Peripheral Mechanical Processes / Modelagem do controle motor para minimização de geração de entropia em processos mecânicos periféricos
Objectives: Classical studies showed that the transition among gait patterns, in vertebrate locomotion, occur when there is an increase in energetic demand. Since the muscular movement is performed under central nervous system control, it is this one that determines the gait pattern in the end. Therefore, this structure is able to translate mechanical events
Publicado em: 2008
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5. Computer modelling and simulation of human posture in standing with neuromuscular reflexes / Modelagem e simulaÃÃo do controle da postura ereta humana quasi-estÃtica com reflexos neuromusculares
This work presents a computer mathematical model of the human neuromusculoskeletal system specially designed to study the postural balance in standing. In addition to the extrafusal muscle tissue properties commonly used in traditional muscle models applied to study human movement and posture, this model includes two components physiologically important of p
Publicado em: 2006
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6. Number and distribution of muscle spindles in the masticatory muscles of the rat.
The frequency and distribution of muscle spindles in the muscles of mastication of the rat have been studied. The average number of spindles found was 110 in the masseter, 75 in the temporalis and 25 in the medial pterygoid muscle, the spindles being predominantly in the medial parts of these muscles. No muscle spindles were found in the lateral pterygoid or
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7. The occurrence of muscle spindles in the masticatory muscles: a methodological study of different staining techniques.
A method, based on experiment, for more reliable and less time-consuming staining and examination of histological specimens for locating muscle spindles by light microscopy is presented. Sections from the masseter and temporal muscles of the rat were stained with different methods and studied in random order. The method giving the highest number of muscle sp
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8. Muscle spindles in the jaw-closer muscles of the domestic cat.
The objectives of this study were to identify the exact location of spindles in jaw-closer muscles of the cat, to count the total number of spindles and to compare their distribution with the distribution of slow extrafusal fibres. The jaw-closer muscle group with all the skeletal attachments intact was fixed in a modified Carnoy solution, decalcified and pr
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9. Intrafusal muscle fibre types in frog spindles.
Muscle spindles from bullfrog semitendinosus, iliofibularis and sartorius muscles were examined with light and electron microscopy. Four types of intrafusal muscle fibre were identified according to their diameter, central nucleation and reticular zone arrangement: a large nuclear bag fibre, a medium nuclear bag fibre, and two types of small nuclear chain fi
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10. An ultrastructural study of neuromuscular spindles in normal mice: with reference to mice and man infected with Mycobacterium leprae.
Mycobacterium leprae have been found within muscle spindles in mice, using electron microscopy, and in man, using light microscopy. Their mode of entry clearly is important. It may be via capsular cells, capillaries or nerves. For this reason muscle spindles from normal mice were studied by electron microscopy with special reference to the capsule and the re
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11. The number and distribution of muscle spindles in human intrinsic postvertebral muscles.
Serial transverse sections of intrinsic postvertebral muscles of a 21 weeks old human fetus were studied after staining with haematoxylin and eosin, Van Gieson's stain with Weigert's haematoxylin, and Glees' silver impregnation technique. Muscle spindles have been demonstrated throughout the entire length of the intrinsic postvertebral muscles. The total num
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12. The number, distribution and density of muscle spindles in two wing muscles of the domestic duck.
A study by serial longitudinal sections of two dorsal wing muscles of the duck, the extensor pollicis and the extensor digitorum communis, has shown that: (1) The extensor pollicis muscle shows a spindle content range of 19--27, mean 23.2, giving a spindle density of 76.7/g; the extensor digitorum communis muscle shows a spindle content range of 37--59, mean