part_of part of cardiac muscle cell ventricular cardiac muscle cell 2014-08-12T20:50:28Z Any cardiac muscle cell that is part of a cardiac ventricle. CL:2000046 Ventricular cardiac muscle cells, or cardiomyocytes, are specialized cells found in the ventricular walls of the heart. They exhibit unique features, including centrally located nuclei, robust cytoskeletal structures, high mitochondria content, and intercalated discs, which contribute to their efficient pumping of blood throughout the body. The main role of ventricular cardiac muscle cells is to coordinate contractions, enabling the heart to pump blood throughout the body. This is achieved through controlled ion movement across cell membranes, generating rhythmic electrical signals called action potentials. Intercalated discs between these cells aid synchronized contractions by allowing efficient signal spread through gap junctions. The high mitochondrial content ensures a constant energy supply for this ongoing contraction cycle. Ventricular cardiac muscle cells contribute not only mechanically but also biochemically by secreting essential hormones like atrial natriuretic peptide and B-type natriuretic peptide for blood pressure regulation and cardiac remodeling. These cells exhibit low turnover under normal conditions, emphasizing their long-term stability, yet have limited regenerative capacity following cardiac injuries. Dysfunction in these cells can result in significant cardiac issues, including heart failure. (This extended description was generated by ChatGPT and reviewed by the CellGuide team, who added references, and by the CL editors, who approved it for inclusion in CL. It may contain information that applies only to some subtypes and species, and so should not be considered definitional.) cardiac ventricle