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.
August 24, 2009 | 1:24 pm. Michael Jackson died of lethal levels of the powerful anesthetic propofol, according to a search warrant affidavit unsealed today in Houston. The court documents quote the L.A. County coroner's office as reaching that conclusion after an autopsy of the pop star.