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JKPSC KAS 2025 · Question 84 of 100

Which of the following acts as the natural pacemaker of the human heart?

Science & Technology

  1. AAV node
  2. BSA nodeCorrect
  3. CBundle of His
  4. DPurkinje fibers

Answer: B. SA node

Explanation

The human heart has a sophisticated electrical system that orchestrates its rhythmic beating. This system generates tiny electrical impulses that make the heart muscle contract, enabling it to pump blood effectively.

Source: JKPSC KAS Prelims 2025 GS via prepp.in

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