Proprioception Flashcards

1
Q

describe kinaesthesia

A

movement awareness

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2
Q

receptors involved in proprioception?

A
  • muscle spindles
  • golgi tendon organs
  • joint receptors
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3
Q

extrafusal

A
  • bulk of the muscle fibres
  • contractile
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4
Q

intrafusal

A
  • muscle spindles
  • specialised muscle fibres
  • within a ct capsule
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5
Q

describe muscle spindle role

A
  • information about muscle length
  • act to maintain muscle length
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6
Q

gamma motor neurones

A
  • cause contraction of intrafusal fibres
  • maintain tension in spindle
  • maintain spindle afferent activity
  • alpha-gamma co-activation
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7
Q

golgi tendon organs

A
  • in tendons, in series with muscle fibres
  • very few, if any, in masticatory muscles
  • tension receptors
  • role in (inhibitory) reflex - prevention of XS stretch of muscle
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8
Q

Joint receptors

A
  • Pacinian - in ligaments - acceleration
  • golgi - in ligament - position
  • ruffini - in capsule - movement
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