Pericardium, parietal

The outer layer of the pericardium which is a conical sac of fibrous tissue that surrounds the heart and the roots of the great blood vessels. The pericardium has outer and inner coats. The outer coat is tough and thickened, loosely cloaks the heart, and is attached to the central part of the diaphragm and the back of the sternum (breastbone). The inner coat is double with one layer closely adherent to the heart while the other lines the inner surface of the outer coat with the intervening space being filled with fluid. This small amount of fluid, the pericardial fluid, acts as a lubricant to allow normal heart movement within the chest. The word "pericardium" means around the heart. The inner part of the pericardium that closely envelops the heart is called the visceral pericardium or epicardium.

Medical dictionary. 2011.

Look at other dictionaries:

  • Parietal — may refer to:*Parietal lobe of the brain *Parietal bone of the skull *Parietal scales of a snake lie in the general region of the parietal bone. *Parietal cell in the stomach *Parietal pleura *Parietal pericardium*Parietal eye, third eye of some… …   Wikipedia

  • Pericardium — Per i*car di*um, n. [NL., fr. Gr. ?, fr. ? about or near the heart; ? about + ? heart.] (Anat.) The double baglike fold of serous membrane which incloses the heart. [1913 Webster] Note: The inner layer is closely adherent to the outer surface of… …   The Collaborative International Dictionary of English

  • 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… …   Medical dictionary

  • Pericardium — Infobox Anatomy Name = PAGENAME Latin = GraySubject = 137 GrayPage = 524 Caption = Posterior wall of the pericardial sac, showing the lines of reflection of the serous pericardium on the great vessels. Caption2 = A transverse section of the… …   Wikipedia

  • Pericardium, visceral — The inner layer of the pericardium, a conical sac of fibrous tissue that surrounds the heart and the roots of the great blood vessels. The pericardium has outer and inner coats. The outer coat is tough and thickened, loosely cloaks the heart, and …   Medical dictionary

  • Parietal pericardium — The outer layer of the pericardium which is a conical sac of fibrous tissue that surrounds the heart and the roots of the great blood vessels. The pericardium has outer and inner coats. The outer coat is tough and thickened, loosely cloaks the… …   Medical dictionary

  • Parietal — Adjective from the Latin parietalis meaning belonging to the wall that the ancient anatomists used to designate the wall, as of a body cavity. For examples, there are the: {{}}Parietal bone the main side bone of the skull. Parietal lobe the main… …   Medical dictionary

  • Parietal pleura — Infobox Anatomy Name = Parietal pleura Latin = pleura parietalis GraySubject = 238 GrayPage = 1087 Caption = A transverse section of the thorax, showing the contents of the middle and the posterior mediastinum. The pleural and pericardial… …   Wikipedia

  • pericardium — n. the membrane surrounding the heart, consisting of two portions. The outer fibrous pericardium completely encloses the heart and is attached to the large blood vessels emerging from the heart. The internal serous pericardium is a closed sac of… …   The new mediacal dictionary

  • parietal pericardium — noun the tough outermost layer of the pericardium that is attached to the diaphragm and the sternum • Hypernyms: ↑serous membrane, ↑serosa • Part Holonyms: ↑pericardium …   Useful english dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.