Medical Definition of Motor

  • Medical Author:
    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Motor: Something that produces or refers to motion. For example, a motor neuron is a nerve cell that conveys an impulse to a muscle for contraction, which then moves a joint.

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Reviewed on 12/12/2018

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