In which the following has the ability to generate action potential without any external stimuli ?A. Sino-atrial node (SAN)B. Atrio-ventricular node (AVN)C. Purkinje fibresD. All of the above

In which the following has the ability to generate action potential wi

1.	In which the following has the ability to generate action potential without any external stimuli ?A. Sino-atrial node (SAN)B. Atrio-ventricular node (AVN)C. Purkinje fibresD. All of the above
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In which the following has the ability to generate action potential without any external stimuli ?A. Sino-atrial node (SAN)B. Atrio-ventricular node (AVN)C. Purkinje fibresD. All of the above

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