Which term refers to the fibrous connective tissue surrounding the heart?

The term that refers to the fibrous connective tissue surrounding the heart is pericardium. The pericardium is a double-walled sac that contains the heart and the roots of the major blood vessels. Structurally, it consists of an outer fibrous layer and an inner serous layer. This sac serves several vital functions, including providing protection to the heart, preventing over-expansion during vigorous activity, and containing lubrication fluid that minimizes friction between the heart and surrounding structures as it beats.

Understanding the anatomy involved is crucial for those in medicolegal death investigations, as knowledge of heart-related injuries and conditions can significantly impact autopsy findings and interpretations of cause of death.