[Regulatory mechanism of contraction-relaxation cycle in smooth muscle cells].
D000200:Action Potentials; D002118:Calcium / Q000378:metabolism / Q000502:physiology; D002147:Calmodulin / Q000502:physiology; D000242:Cyclic AMP / Q000502:physiology; D006801:Humans; D009119:Muscle Contraction; D009126:Muscle Relaxation; D009130:Muscle, Smooth / Q000166:cytology* / Q000502:physiology; D009218:Myosins / Q000502:physiology; D012964:Sodium / Q000378:metabolism
D002147:Calmodulin; D012964:Sodium; D000242:Cyclic AMP; D009218:Myosins; D002118:Calcium