Final answer:
The fibrous skeleton of the heart does indeed act as electrical insulation between the atria and the ventricles, which is true.
Step-by-step explanation:
The statement that the fibrous skeleton of the heart serves as electrical insulation between the atria and the ventricles is true. The fibrous skeleton, also known as the cardiac skeleton, includes rings of dense connective tissue that surround the openings between the atria and ventricles, as well as the openings to the pulmonary trunk and aorta. It serves as the attachment point for heart valves and creates an important boundary in the heart's electrical conduction system by insulating the atria from the ventricles. This insulation ensures that the electrical impulses that trigger heart contractions are properly directed through the heart's conduction pathway, which includes the sinoatrial (SA) node, atrioventricular (AV) node, bundle of His, right and left bundle branches, and the Purkinje fibers.