Impulse originating from sino-atrial node are transmitted to the
A
Atrio-ventricular node
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B
Bundle of His
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C
Pacemaker
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D
Purkinje system
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Solution
The correct option is A Atrio-ventricular node The sino-atrial node generates the impulse for first heart beat. This electrical impulse is then conducted to the atrio-ventricular node.