Duration: 3:24

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1

W hich is the correct route through which pulse making impulse travels in the heart?
(A) SA node \( \rightarrow \) AV node \( \rightarrow \) Bundle of His \( \rightarrow \) Purkinje fibres
(B) AV node \( \rightarrow \) Bundle of \( \mathrm{His} \rightarrow \) SA node \( \rightarrow \) Purkinje fibres \( \rightarrow \) heart muscles
(C) AV node \( \rightarrow \) SA node \( \rightarrow \) Purkinjefibres \( \rightarrow \) Bundle of His \( \rightarrow \) heart muscles
(D) SA node \( \rightarrow \) Purkinje fibres \( \rightarrow \) Bundle of His \( \rightarrow \) AV node \( \rightarrow \) heart muscles
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