Cardiac muscle: changes in optimal length during inotropic interventions.
D000818:Animals; D001696:Biomechanical Phenomena; D002118:Calcium / Q000502:physiology; D002415:Cats; D006321:Heart / Q000502:physiology*; D006439:Hemodynamics; D066298:In Vitro Techniques; D009119:Muscle Contraction; D009206:Myocardium; D009638:Norepinephrine / Q000494:pharmacology; D010210:Papillary Muscles
D002118:Calcium; D009638:Norepinephrine