title: The regulation of contractile muscle activity.
mesh_terms: D000199:Actins; D000255:Adenosine Triphosphate / Q000378:metabolism*; D009119:Muscle Contraction; D009129:Muscle Tonus; D009132:Muscles / Q000166:cytology / Q000378:metabolism; D009210:Myofibrils / Q000502:physiology; D009218:Myosins
chemical_list: D000199:Actins; D000255:Adenosine Triphosphate; D009218:Myosins