Voluntary (skeletal or striated) muscle

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  • Voluntary (skeletal or striated) muscle
    • Contracts quickly, fatigues quickly
    • Contraction under voluntary nervous system control
    • Long multinucleate fibres
      • 100 µm in diameter
      • Surrounded by cell surface membrane called sarcolemma
    • Voluntary movements of skeleton at the joints
    • Cytoplasm called sarcoplasm
      • Many mitochondria
      • Extensive sarcoplasmic reticulum
      • Number of myofibrils

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