Choose the correct answer from the alternatives given.
The pace maker in the heart is called:

sino-atrial node

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atrio-ventricular node (AVN)

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purkinje fibres

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papillary muscles

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Solution

The correct option is A sino-atrial node
The sino-atrial node (SAN) present in the heart is known as the natural pacemaker of the heart. This is because the heartbeat originates from the SAN.
So, the correct option is 'Sino-atrial node'.

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Sino-atrial node is called the pacemaker of our heart. Why?

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