Label the structures of cardiac muscle tissue that forms the myocardium of the heart chamber walls and the muscular ridges (trabeculae carneae of ventricles and pectinate muscles of portions of atria) and papillary muscles of ventricles by clicking and dragging the labels to the correct location. Label the structures of cardiac muscle tissue that forms the myocardium of the heart chamber walls and the muscular ridges (trabeculae carneae of ventricles and pectinate muscles of portions of atria) and papillary muscles of ventricles by clicking and dragging the labels to the correct location.
