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.
King of Pop has sold 13.228 million albums since his death in 2009, compared to 13.152 million from 1996-2008. Michael Jackson passed away on June 25, 2009 and, as might have been expected, has had tremendous album sales since.