The contribution of Ca++ ions to the current voltage relation in cardiac muscle (Purkinje fibers).
D000818:Animals; D002118:Calcium / Q000032:analysis*; D006329:Heart Conduction System / Q000502:physiology*; D008564:Membrane Potentials; D011188:Potassium / Q000032:analysis; D012756:Sheep; D012964:Sodium / Q000032:analysis
D012964:Sodium; D011188:Potassium; D002118:Calcium