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Title: Muscle units fire? Post by: water2014 on Apr 16, 2014 a. When a muscle is stimulated, do all motor units fire? Why, or why not?
Title: Re: Muscle units fire? Post by: zzzz on May 1, 2014 When a muscle is stimulated motor units are recruited according to size (smallest to largest) in response to task at hand. Ex: Tossing a pair of keys to another person would not require much strength as throwing a 20 lb weight. If motor units were not recruited according to size every muscle contraction would be full force no matter the task.
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