Proprioceptors

9 cards

Proprioceptors


 
  
Created Apr 12, 2010
by
0506088h

 

 
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1
List the functions of proprioceptors.
 
Muscle spindle - primary - velocity of shorteningSecondary - muscle lengthGolgi tendon - muscle...
2
What is the function of intrafusal muscle fibre contraction?
 
It maintains tension in the centre of the fibre even when the muscle is fully contracted.
3
Why does the fibre need tension?
 
so that it fires AP to the CNS which monitors and adjusts muscular dynamics. 
4
What fibres supply the intrafusal fibres?
 
gamma fibres - they do not produces joint movement.
5
What is alpha - gamma coactivation
 
When gamma is activated at the same time as alpha fibres to ensure sensory input to the CNS...
6
Golgi tendons-where?
 
near junction between tendon and muscle
7
How do it work?
 
Its free nerve ending wrap around collagen bundles which are bowed when relaxed. When muscle...
8
What is the effect of the APs?
 
They inhibit the contraction extrafusal fibre and activate interneurons which activate motor...
9
What type is the afferent neuron?
 
alpha

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