Normal Structure and Function of the Heart

The heart is a four-chambered muscular pump with approximately the size of the ______ of the same person

The atrioventricular valves separate the atria and ventricles on each side, ______ on the right, mitral on the left

Arterial valves are placed between the right ventricle and pulmonary artery and the left ventricle and ______

The bulk of the chamber wall – the ______ – comprises a network of striated muscle cells, each separated by an intercalated disc and arranged in muscle bundles

Mesothelial cells produce some clear ______ to lubricate the surfaces during cardiac contraction