what does a muscle do when it contract
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During a concentric contraction, a muscle is stimulated to contractaccording to the sliding filament theory. This occurs throughout the length of themuscle, generating a force at the origin and insertion, causing the muscle to shorten and changing the angle of the joint.
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The sliding filament theory of muscle contraction describes how actin and myosin slide over each other, causing the myofibrils to shorten, which in turn causes muscle fibers to contract. Skeletal muscle allows the body to move.
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