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.
A doctor told a courtroom this week in Los Angeles that Michael Jackson went without real sleep for 60 days leading up to his death.The testimony raises questions about how long a person can survive without shut-eye, and whether it matters what type of sleep a person slips into when they snooze. doctor told a courtroom this week in Los Angeles that Michael Jackson went without real sleep for 60 days leading up to his death.