About Us | Privacy | Site Map
May 22, 2013
Font Size
A
A
A

Definition of Pericardium

Pericardium: The conical sac of fibrous tissue that surrounds the heart and the roots of the great blood vessels. The pericardium's outer coat (the parietal pericardium) is tough and thickened, loosely cloaks the heart, and is attached to the central part of the diaphragm and the back of the breastbone. Its inner coat (the visceral pericardium or epicardium) is double, with one layer closely adherent to the heart and the other lining the inner surface of the outer coat. The intervening space between these layers is filled with pericardial fluid. This small amount of fluid acts as a lubricant to allow normal heart movement within the chest.

Also known as the pericardial sac. See also: Pericarditis.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=4834
Last Editorial Review: 4/27/2011 5:27:15 PM

Medical Dictionary Definitions A - Z

Search Medical Dictionary

Heart Health

Get the latest treatment options.

Please acknowledge your agreement





Medical Dictionary


Use Pill Finder Find it Now

Pill Identifier on RxList

  • quick, easy,
    pill identification

Find a Local Pharmacy

  • including 24 hour, pharmacies