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Description of sarcomeres

Give brief description sarcomeres?

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Sarcomeres are the contractile units of muscle tissue formed of the alternating actin blocks (thin filaments) myosin blocks (thick filaments). Numerous sarcomeres placed in the linear sequence form a myofibril. Thus one muscle fiber (cell) has various myofibrils made of sacomeres.

The compartments where myofibrils are inserted are delimited by the excitable membrane recognized as sarcolemma. The sarcolemma is the plasma membrane of muscle cell.

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