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The given diagram shows the human heart....

The given diagram shows the human heart. Which site represents the generation of action potential in human heart

A

IV

B

III

C

II

D

I

Text Solution

Verified by Experts

The correct Answer is:
D
SA node is present in the upper left corner of right atrium. It is called as pacemaker of heart because it helps to conduct and generate nerve impulse about 70 – 75 times faster than AV node.
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