Medical Dictionary

crossbridge

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noun cross·bridge \ˈkrȯs-ˌbrij\

Medical Definition of crossbridge

  1. :  the globular head of a myosin molecule that projects from a myosin filament in muscle and in the sliding filament hypothesis of muscle contraction is held to attach temporarily to an adjacent actin filament and draw it into the A band of a sarcomere between the myosin filaments


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holding stubbornly to a belief or view

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