Question

Muscle spindles A: respond to stretch B: increase force of contraction when activated C: are located...

Muscle spindles

A: respond to stretch

B: increase force of contraction when activated

C: are located in the tendon of the muscle

D: all the above

E: A and B

Science   Anatomy-And-Physiology   
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Answer #1

muscle spindles are stretch receptors within the body of a muscle that primarily detect changes in the length of the muscle .they convey length information to the cental nervous system via afferent nerves fibers. and important role of muscle spindles is regulating the contraction of muscle.

A) option is correct. it respond for stretch

C) muscle spindles are located in the within the belly of muscles,between extrafusal muscle fibers....so this option is wrong...so option D is also wrong...

B) it increases the force of contraction when muscle spindles are activated..

option E is correct....both A & B are correct.

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