Cardiac fibroblasts are a type of cell found in the heart tissue that plays a critical role in maintaining the structural integrity of the heart. These cells are responsible for producing and maintaining the extracellular matrix, which provides support for the cardiac muscle cells, as well as regulating the response to injury and inflammation in the heart. Cardiac fibroblasts are also involved in the development of diseases such as cardiac fibrosis, which can lead to heart failure. Understanding the function of cardiac fibroblasts is important for developing new therapies for heart disease.