| Skeletal Muscle Structure |
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| • | Muscle
cells are formed by fusion of myoblasts |
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| • | Myofibrils
are parallel arrays of long cylinders packed in the |
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| muscle
cell |
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| • | Sarcomeres
are symmetric repeating units from z-line to z-line |
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| in
the myofibril |
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| • | Thick
filaments are myosin filaments |
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| • | Thin
filaments are actin filaments |
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