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WB JEE Medical WB JEE Medical Solved Paper-2006

  • question_answer
    Rate of heart beat is determined by:

    A)  AV - node                          

    B)  SA - node

    C)  Purkinje fibres                                

    D)  Papillary muscles

    Correct Answer: C

    Solution :

                    Purkinje fibres are also called nodel tissue. It is a bundle of specialized cardiac muscle fibres. It receives rhythmical impulses of electrical excitation from the pace-maker and spreads the waves of contraction through the ventricle walls.


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