cardiac muscle cell differentiation ventricular cardiac muscle cell differentiation biological_process The process in which a relatively unspecialized cell acquires specialized features of a ventricular cardiac muscle cell. Cardiac muscle cells are striated muscle cells that are responsible for heart contraction. The ventricle is the part of the heart that pumps blood out of the organ. ventricular cardiomyocyte differentiation ventricular heart muscle cell differentiation GO:0055012