Role of calcium in initiation of activity of smooth muscle.
D000109:Acetylcholine / Q000494:pharmacology; D000818:Animals; D001001:Anura; D001011:Aorta / Q000502:physiology; D002118:Calcium / Q000502:physiology*; D002462:Cell Membrane; D004594:Electrophysiology; D004721:Endoplasmic Reticulum; D004837:Epinephrine / Q000494:pharmacology; D005260:Female; D006863:Hydrogen-Ion Concentration; D009119:Muscle Contraction / Q000187:drug effects; D009130:Muscle, Smooth / Q000187:drug effects / Q000502:physiology*; D011188:Potassium; D051381:Rats; D013270:Stomach / Q000502:physiology; D014426:Turtles; D014599:Uterus / Q000502:physiology
D000109:Acetylcholine; D011188:Potassium; D002118:Calcium; D004837:Epinephrine