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.
Madonna Celebrates Michael Jacksonâs 58th Birthday With Amazing Throwback Photos. More News. The Queen of Pop is missing her King. Madonna took to Instagram to pay tribute to her late friend and fellow superstar Michael Jackson on Monday, August 29, what would have been his 58th birthday. PHOTOS: Most Shocking Celebrity Deaths of All Time.