• Question: how many muscle fibers are in a bicep

    Asked by 215artc28 to Andrew on 14 Jun 2015.
    • Photo: Andrew Phillips

      Andrew Phillips answered on 14 Jun 2015:

      I had to research this one, so good question!

      It’s estimated at around quarter of a million. No one has counted exactly, but the number has been estimated based on the size of the muscle and then taking a muscle biopsy and counting the number in the biopsy.

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