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Quantitative Studies on Mammalian Muscle Spindles and their Sensory Innervation

  • Robert Banks
  • Michael Stacey

Abstract

It is not surprising, in view of the various functional roles played by skeletal muscles, that each muscle should possess a characteristic proprioceptive innervation. Muscle spindles are relatively easy to count and have been the main subject of quantitative studies. In drawing comparisons between different muscles, most authors have used the number of spindles per gram of adult muscle, or spindle density, as a measure of relative abundance. In both man and cat, where sufficient muscles have been examined, smaller muscles have been found usually to have higher spindle densities than larger muscles (reviewed by Hosokawa, 1961; Voss, 1971; and Barker, 1974). This has frequently led to the suggestion that the higher densities are functionally appropriate to small muscles involved in fine postural adjustment or manipulation, yet it has never been demonstrated that it is justifiable to relate spindle number linearly to muscle mass as a simple density.

Keywords

Muscle Spindle Muscle Weight Small Muscle Sensory Innervation Muscle Receptor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1988

Authors and Affiliations

  • Robert Banks
    • 1
  • Michael Stacey
    • 1
  1. 1.Department of ZoologyUniversity of DurhamDurhamUK

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