A) AV node
B) SA node
C) AS node
D) SV node
Correct Answer: B
Solution :
Smu-auricular node or SA node is the pacemaker of heart. It is the small area of specialised cardiac muscle fibre in the wall of right atrium of heart in mammals. It acts as the spontaneous rythemical electrical activity which activates and maintains the contraction of heart.You need to login to perform this action.
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