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.
Wednesday marks five years since Michael Jackson passed away, but his legacy lives on and itâs not just a hologram. The King of Pop left behind three childrenâPrince, 17; Paris, 16 and Blanket, 12âwho reportedly ârejoice in the memory of their father every dayâ since his untimely death.