Body Fluids and CirculationHard
Question
Pacemaker of heart is
Options
A.AV node
B.bundle of His
C.SA node
D.Purkinije fibres
Solution
SA node lies in the right wall of right auricle below the opening of superior vena cava. It is also called pacemaker as it is first to orginate the cardiac impulses and determines the rate of heart beat.
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