Movement of myosin heads during a heart beat.
D000818:Animals; D003971:Diastole; D004285:Dogs; D004558:Electric Stimulation; D009038:Motion; D009200:Myocardial Contraction; D009206:Myocardium / Q000648:ultrastructure; D009210:Myofibrils / Q000648:ultrastructure; D009218:Myosins / Q000502:physiology*; D013599:Systole; D013997:Time Factors; D014961:X-Ray Diffraction
D009218:Myosins