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Number of fibers per muscle

How many fibers per muscle are there?

200

It is important to know that in the average motor unit there are 200 muscle fibers.  What is to know about the muscle fibers of one motor unit?  They are dispersed throughout the muscle and they contract in unison.  They provide ability to sustain long-term contraction as motor units take turns contracting.  When it comes to small motor units, there are 3-6 muscle fibers per neuron.  On the other hand, when it comes to large motor units, there are 1000 muscle fibers per neuron.

This fact is verified on : December 23, 2013.





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