The pericardium is a double-walled sac that contains the heart and the roots of the great vessels. The outer wall of the pericardium is composed of dense connective tissue. The portion of the inner wall of the pericardium that is in contact with the heart (but not in contact with the great vessels) is the epicardium. The epicardium contains the blood vessels supplying blood to heart muscle (the coronary arteries) as well as nerve fibers.
It's been three years since the world learned of Michael Jackson's death. Photos: Remembering the King of Pop Three Years Later.
On December 29, 2009, the American Film Institute recognized Jackson's death as a moment of significance saying, Michael Jackson's sudden death in June at age 50 was notable for the worldwide outpouring of grief and the unprecedented global eulogy of his posthumous concert rehearsal movie This Is It.