The wall of the |heart| is composed of cardiac muscle tissue, referred to as myocardium. This tissue is similar to the voluntary muscles of the body. In the cardiac tissue, however, the elongated muscle cells are highly interconnected to assure the maintenance of a coordinated and orderly heartbeat. The medical term myocarditis refers to inflammation of the |heart| muscle. A very smooth tissue, endocardium, lines the interior chambers of the |heart|. This lining helps to reduce any friction that may be caused by ~blood~ that is constantly moving through the four hollow chambers of the |heart|. Endocarditis is an inflammation of the |heart| lining. This condition can cause rough spots to develop in the endocardium, which may lead to thrombosis.
