The correct route through which cardiac action potentials travels in the heart is
A
node 
Bundle of 
SA node 
Purkinje fibres 
Heart muscles
B
AV node 
SA node 
Purkinje fibres 
Bundle of His 
Heart muscles
SA node Purkinje fibres Bundle of His Heart muscles
C
SA node 
Purkinje fibres 
Bundle of His 
AV node 
Heart muscles
Purkinje fibres Bundle of His AV node Heart muscles
D
SA node 
AV node 
Bundle of His 
Purkinje fibres 
Heart muscles
AV node Bundle of His Purkinje fibres Heart muscles
Text Solution
Verified by ExpertsThe correct answer is:
D
The cardiac action potentials travel in the heart in the following order: SA node 
AV node 
Bundle of His 
Purkinje fibres 
Heart muscles.
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