Photographic analysis of the active and passive components of cardiac valvular action.
D000818:Animals; D001021:Aortic Valve / Q000502:physiology*; D002302:Cardiac Output; D004285:Dogs; D004562:Electrocardiography; D006321:Heart / Q000502:physiology; D006352:Heart Ventricles; D008722:Methods; D008943:Mitral Valve / Q000502:physiology*; D009040:Motion Pictures; D010313:Partial Pressure; D010477:Perfusion; D010781:Photography