the impermeability of NMDG+may influenceNa+-mediated action potential
the action potential in typical cardiomyocytes(passive) is composedAction potential in cardiomyocytes
a change in membrane polarization at the axon terminals Votage - modulated Ca2 +causesa change in membrane polarization at the axon terminals Votage - modulated Ca2 +
to a slower heart ratecan leadto a slower heart rate
activation of calcium currentcausesactivation of calcium current
release of Ca^+ from internal stores which activates a different class of K+ channeltriggersrelease of Ca^+ from internal stores which activates a different class of K+ channel
the vesicles to move downcausesthe vesicles to move down
at resttriggeredat rest
them to closecausesthem to close
to contraction of the myocardium ... resulting in systoleleadsto contraction of the myocardium ... resulting in systole
to postsynaptic action potentialleadsto postsynaptic action potential
at the SA node ... as opposed to some other ectopic focus of originmust ... originateat the SA node ... as opposed to some other ectopic focus of origin