What is the name of the structure commonly known as the pacemaker of the heart?

What is the name of the structure commonly known as the pacemaker of the heart?

  • Sinoatrial node
  • Atrioventricular node
  • Bundle of His
  • Purkinje fibers
The correct option is: Sinoatrial node
The sinoatrial (SA) node is known as the pacemaker of the heart. It initiates electrical impulses that regulate heart rhythm.
Tags: SA nodepacemakerheartelectrical impulses