title: Dynamic stiffness of papillary muscle during contraction and relaxation.
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D002415:Cats; D004548:Elasticity; D066298:In Vitro Techniques; D009119:Muscle Contraction; D009129:Muscle Tonus; D010210:Papillary Muscles / Q000502:physiology*; D014783:Viscosity