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Question

The heart’s natural pacemaker is termed as the:


A

sinoatrial node

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B

atrioventricular node

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C

bundle of His

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D

left and right bundle branches

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Solution

The correct option is A

sinoatrial node


Our natural pacemaker is the sino-atrial (SA) node in the heart. This is a patch of auto excitable tissue present in the upper right-hand corner of the right atrium. This helps in the origin and conduction of the heart beat.

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