title: Control of activity of cardiac, skeletal, and insect fibrillar muscle by positive feedback.
mesh_terms: D000818:Animals; D002118:Calcium / Q000502:physiology; D005246:Feedback; D007313:Insecta / Q000502:physiology*; D009119:Muscle Contraction; D009200:Myocardial Contraction
chemical_list: D002118:Calcium