NEET Biology NEET PYQ-Circulation In Animals Body Fluids

  • question_answer
    Impulse of heart beat originates from: [AIPMT 2002]

    A) SA node

    B) AV node

    C) vagus nerve

    D) cardiac nerve

    Correct Answer: A

    Solution :

    [A] SA node (Sino Artial node) is a group of specialized cardiac muscle cells which have the property of generating rhythmic excitatory waves. It is also called pacemaker of the heart as it generates the wave for all the chambers of heart to contract.


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