A) Purkinjes fibers
B) SA node
C) AV node
D) Chordae tendinae
Correct Answer: B
Solution :
The heart beat originates from the Sinuatrial node (SA node-pacemaker) which lies in the wall of right atrium near the opening of superior vena cava. The SA node is a mass of neuro muscular tissue.You need to login to perform this action.
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