Explain about ia muscle-spindle, Biology

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Which of the following occur in response to an increase in the length of the right knee extensors in response to a quick tap applied to the right patellar tendon?  An increase in the amount of

A. open force-gated channels in the central axon terminals of IA muscle-spindle stretch receptor neurons whose peripheral terminals are in the right knee extensor muscle.

B. calcium conductance in the central axon terminals of IA muscle-spindle stretch receptor neurons whose peripheral terminals are in the right knee extensor muscle.

C. calcium conductance in the membranes of the sarcoplasmic reticulum in the muscle fibers of the right knee extensor muscle.

 


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