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Standard X
Biology
Pulse and Blood Pressure
Question

Impulse originating from sino-atrial node are transmitted to the
  1. Atrio-ventricular node
  2. Bundle of His
  3. Pacemaker
  4. Purkinje system

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

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