Effect of externally applied load on the work done by the isolated heart.
D000818:Animals; D001001:Anura; D001011:Aorta; D001794:Blood Pressure; D006321:Heart / Q000502:physiology*; D006339:Heart Rate; D006352:Heart Ventricles; D066298:In Vitro Techniques; D009119:Muscle Contraction; D010477:Perfusion; D014937:Work