![Where does the impulse of heart beat originate?](https://www.gkseries.com/blog/wp-content/uploads/2022/04/Where-does-the-impulse-of-heart-beat-originate.png)
Q. Where does the impulse of heart beat originate?
A. S.A. node
B. A.V. node
C. vagus nerve
D. cardiac nerve
Answer: S.A. node
A. S.A. node
B. A.V. node
C. vagus nerve
D. cardiac nerve
Answer: S.A. node
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