Nerves and blood vessels that service the muscle fibers are located in the connective tissues of the

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The perimysium is the connective tissue that surrounds bundles of muscle fibers (called fascicles). This tissue contains the nerves and blood vessels that service the muscle fibers. The endomysium surrounds individual muscle fibers and the sarcolemma is the plasma membrane of muscle cells. The sarcomere is the functional unit of muscle contraction and myofibrils are long, cylindrical structures within muscle fibers that contain the contractile proteins actin and myosin.

Nerves and Blood Vessels That Service the Muscle Fibers Are