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Skeleto‐fusimotor f...
Skeleto‐fusimotor fibres in the rabbit
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Emonet‐Dénand, Françoise (författare)
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- Jankowska, Elzbieta (författare)
- Gothenburg University,Göteborgs universitet,Fysiologiska institutionen,Department of Physiology
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Laporte, Y. (författare)
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(creator_code:org_t)
- 1970-10-01
- 1970
- Engelska.
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Ingår i: The Journal of Physiology. - : Wiley. - 0022-3751 .- 1469-7793. ; 210, s. 669-680
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Abstract
Ämnesord
Stäng
- 1. In rabbits, repetitive stimulation of single motor axons to lumbrical muscles elicits both a contraction of extrafusal muscle fibres and an increase in the discharge frequency of spindle primary endings. 2. This activation of the sensory endings can be attributed to the contraction of intrafusal muscle fibres because it persists after the contraction of extrafusal muscle fibres has been suppressed by selective curarization of their neuromuscular junctions. 3. In non‐curarized preparations the frequency of most of the afferent discharges continues to increase when rates of stimulation of motor fibres exceed the tetanic fusion frequency of the extrafusal muscle fibres. 4. The effect of repetitive stimulation of motor fibres that supply extrafusal and intrafusal muscle fibres was studied on the responses of primary endings to phasic stretch. Of twelve fibres, eight were found to exert a dynamic effect and four a static one. 5. Selective curarization of the extrafusal neuromuscular junctions does not modify the nature of the static and dynamic effects. © 1970 The Physiological Society
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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