How are muscle fibers arranged?
How are muscle fibers arranged? Inside each skeletal muscle, muscle fibers are organized into bundles, called fascicles, surrounded by a middle layer of connective tissue called the perimysium. Are cardiac muscles arranged in bundles? Cardiac myocytes are surrounded by a thin membrane (sarcolemma), and the interior of each myocyte contains bundles of longitudinally arranged myofibrils. […]