The pacemaker of heart is

AV node

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SA node

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SV node

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Tricuspid valve

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Solution

The correct option is B
SA node

The correct option is B
Explanation of the correct option:
SA node initiates and maintains the rhythmicity of our heart.
Hence, it is known as the pacemaker of the heart.
Explanation of the incorrect options:
Option A
AV node is called the pacesetter of the heart as it regulates the rhythm of our heart rate.
Option C
SV node is not related to the human heart.
Option D
Tricuspid valves are present between the right atrium and right ventricle to prevent the backflow of blood.
Final answer: The pacemaker of the heart is the SA node.

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