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.
Ebet Roberts/Getty Images. Michael Jackson died one year ago Thursday. Unless, that is, you believe that the pop legend didn't die, in which case Thursday marks the one-year anniversary of his faked death.In honor of the latter milestone, we've mined the leading theories as to how and why Jackson pulled an Elvis.nless, that is, you believe that the pop legend didn't die, in which case Thursday marks the one-year anniversary of his faked death. In honor of the latter milestone, we've mined the leading theories as to how and why Jackson pulled an Elvis.