has part has part has_part occurs in occurs in characteristic of part of has modifier cardiac muscle contraction increased heart ventricle muscle contractility increased heart left ventricle muscle contractility 2024-06-10T16:29:43Z increased left ventricular ejection fraction increased left ventricular muscle contractility greater than the normal ability of the heart left ventricle muscle to shorten or to develop increased tension, often measured by ventricular ejection fraction volume MP:0031635 enhanced left ventricle muscle contractility MPheno.ontology increased left ventricle muscle contractility abnormal increased rate left ventricle myocardium