Which of the following is NOT a purpose of the pericardium?

The pericardium is a double-walled sac that contains the heart and the roots of the major vessels. Its primary functions include protecting the heart, reducing friction during heartbeats, and providing structural support.

The protective role of the pericardium is essential as it acts as a barrier against infections and physical trauma. The presence of the pericardial fluid helps minimize friction between the heart and surrounding structures as the heart beats, ensuring smooth motion. Additionally, the pericardium helps maintain the position of the heart within the thoracic cavity, which is a key aspect of its structural support function.

In contrast, while blood clotting is a critical physiological process, it is primarily associated with components of the blood and the vascular system, rather than the pericardium itself. Therefore, stating that helping with blood clotting is a purpose of the pericardium is not accurate, which correctly identifies this option as the one that does not align with the functions of the pericardium.