Body Fluids and Circulation Question 82

82. Pacemaker of heart is

[1994]

(a) AV node

(b) Bundle of His

(c) SA node

(d) Purkinje fibres

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Answer : c

Hints & Solutions

(c) Sino-Auricular node (S.A node) present in the walls of right auricle has a myogenic initiation of heartbeat in a regular fashion and controls the pace of heartbeat.



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