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Pacemaker of heart is (a) AV node (b) Bundle of His (c) SA node (d) Purkinje fibres

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Pacemaker of heart is

 (a) AV node

(b) Bundle of His

(c) SA node 

(d) Purkinje fibres 

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1 Answer

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Best answer

Correct Option (c) SA node 

Explanation:

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 originate the cardiac impulses and determines the rate of heartbeat.

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