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Home Q & A Board Biology-Related Homework Help Cell Biology
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nite_n_day nite_n_day
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11 years ago
Describe a motor unit.  How many fibers does a muscle unit contain?
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Eric Clapton

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#1
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11 years ago
"A motor unit is made up of a motor neuron and the skeletal muscle fibers innervated by that axon. Groups of motor units often work together to coordinate the contractions of a single muscle. Each motor unit contains many muscle fibers."
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#2
Valued Member
11 years ago
A motor unit consists of all of the skeletal muscle fibers controlled by a single motor neuron. They may have as few as 10 fibers (eye muscles) or as many as 10,000 (back muscles).
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nite_n_day Author
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#3
11 years ago
Thanks both of you, respects.
Would you know my name, if I saw you in heaven?

Eric Clapton
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