Write the features that distinguish between the two
Sino-atrial node and Atrio-ventricular node

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Solution

Sino-atrial node Atrio-ventricular node
i) Present on the upper side of the right auricle. i) Present at the junction of right auricle and right ventricle.
ii) Initiates the heartbeat. ii) Takes impulse from SA node and forwards it further.

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	Sino-atrial node		Atrio-ventricular node
i)	Present on the upper side of the right auricle.	i)	Present at the junction of right auricle and right ventricle.
ii)	Initiates the heartbeat.	ii)	Takes impulse from SA node and forwards it further.