Is the skeleton of the heart made of cartilage?

No, the skeleton of the heart is not made of cartilage; it is primarily composed of fibrous connective tissue. This structure, known as the cardiac skeleton or fibrous skeleton of the heart, provides support and helps maintain the heart's shape while also serving as an anchor for the heart valves and the myocardium. Additionally, it plays a crucial role in the electrical conduction system of the heart.