Answer: Nerve
The middle layer of the heart wall made of cardiac muscle tissue. Found between the endocardium & pericardium
Myocardium (myo-cardium) is the middle layer of the heart wall. It is composed of cardiac muscle fibers which enable heart contractions. The myocardium is the thickest layer of the heart wall with its thickness varying in different parts of the heart.
The middle layer of the heart wall is the myocardium—the muscle tissue of the heart and the thickest layer of the heart wall. It is composed of cardiac muscle cells or cardiomyocytes. Cardiomyocytes are specialized muscle cells that contract like other muscle cells but differ in shape.
The middle layer called the ________________ consists of cardiac muscle and is the thickest layer of the heart wall . myocardium. The inner __________________ is smooth and made up of connective tissue and epithelium and is continuous with the endothelium of major vessels joining the heart . endocardium .
middle thickest layer of the heart wall made of cardiac muscle ; the layer between the epicardium and endocardium layers pericardium the fibroserous sac enclosing the heart ; the sac contains fluid that reduces friction between the pericardium and other heart layers (epicardium myocardium and endocardiu...