[Role of calcium ion in the smooth muscle].
D000200:Action Potentials; D000818:Animals; D002118:Calcium / Q000037:antagonists & inhibitors / Q000502:physiology*; D002462:Cell Membrane / Q000502:physiology; D006168:Guinea Pigs; D066298:In Vitro Techniques; D009119:Muscle Contraction; D009130:Muscle, Smooth / Q000502:physiology*; D011817:Rabbits
D002118:Calcium