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intrafusal muscle fiber |
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intrafusal muscle fiber [-fyo̅o̅′zəl] the striated muscle fiber within a muscle spindle. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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With respect to the action of botulinum toxin A, it is suggested that the effect of the toxin could be mediated by paresis of both the extrafusal and intrafusal muscle fibres, thereby altering the afferent discharge in the muscle. Dystrophin and a dystrophin-related protein in intrafusal muscle fibers, and neuromuscular and myotendinousjunctions. Hagbarth et al,[24] however, proposed that crossbridge connections between the filaments of resting intrafusal muscle fibers can heighten a muscle's phasic stretch reflex activity. |
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