By which of the following names is the S - A node of mammalian heart known as?

Options :
  1. Autoregulator
  2. Pacemaker
  3. Time controller
  4. Beat regulator
Answer and Explanation :-

Answer: Option 2

Explanation:

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I had hoped to be disliked by most, not by way of rebellion, but by way of excellence, disdain for the habitual, and the common man's inability to grasp this. The act of being scorned? I saw it as a victory, my irreverent boast against this world which could never fully quench me.
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