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Surrounding each muscle fiber (cell) is a delicate external lamina composed primarily of reticular fibers. This external lamina is produced by the muscle fiber and, when observed through the light microscope, cannot be distinguished from the cell membrane of the muscle fiber, the sarcolemma.
Each bundle of muscle, called fasciculus, is surrounded by the perimysium. Each muscle cell within the fasciculus is protected by more connective tissue called endomysium. Each skeletal muscle is attached to a bone on one end, stretching across a joint and is attached to the end of another bone.