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Multiple Choice Question

Which node is the pacemaker of the human heart?मानव हृदय का पेसमेकर (Pacemaker) कौन सा नोड है?

  • A
    AV node
    AV नोड
  • B
    SA node
    SA नोड
  • C
    Bundle of His
    बंडल ऑफ हिस
  • D
    Purkinje fibers
    पुरकिंजे फाइबर
Explanation:
The Sinoatrial (SA) node initiates the heartbeat.
साइनोएट्रियल (SA) नोड हृदय की धड़कन शुरू करता है।

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This question belongs to the set "UKSSSC Pashudhan Prasar Adhikari Mock Test 1: Part 2 (Biology / जीव विज्ञान)". Click below to read detailed notes and attempt the full quiz.

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