Term Name:	voltage-gated sodium channel activity involved in cardiac muscle cell action potential
Synonyms:
Definition:	Enables the transmembrane transfer of a sodium ion by a voltage-gated channel through the plasma membrane of a cardiac muscle cell contributing to the depolarization phase of an action potential. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded.
Ontology:	GO: Molecular Function [GO:0086006]    QuickGO    AmiGO