PATHOLOGY

Detailed explanation-1: -Fibrous pericardium: This is the tough, outermost layer of your pericardium. It’s made of connective tissue that prevents your heart from expanding too much.

Detailed explanation-2: -The pericardium is the membrane that encloses the heart and the roots of the major heart vessels, consisting of an outer fibrous layer (fibrous pericardium) and an inner double serous membrane layer (serous pericardium).

Detailed explanation-3: -The parietal layer lines the inner regions of the fibrous pericardium, while the visceral layer lines the outer layer of the heart and is therefore also known as the epicardium.