pericardium

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Related to pericardial sac: Pleural sac

pericardium:

see heartheart,
muscular organ that pumps blood to all parts of the body. The rhythmic beating of the heart is a ceaseless activity, lasting from before birth to the end of life. Anatomy and Function

The human heart is a pear-shaped structure about the size of a fist.
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Pericardium

 

the closed, saclike structure surrounding the heart in vertebrate animals and in man. The pericardium is an isolated part of the secondary body cavity, the coelom. It consists of two layers: an external, parietal layer—the pericardium proper—and an internal, visceral layer—the epicardium. The pericardium proper consists, in turn, of an internal, serous layer and an external, fibrous layer. The epicardium, being an external membrane of the heart, directly covers and is fused to the heart muscle (myocardium). In the region where large blood vessels enter and leave the heart, the epicardium is turned back and is continuous with the pericardium proper. Between the pericardium layers is a slitlike cavity containing a small quantity of transparent pale-yellow serous fluid. The pericardium contains blood vessels, lymphatics, and numerous nerve endings and is surrounded by areolar connective tissue. It has many receptors, whose stimulation causes hemodynamic and respiratory changes.

pericardium

[‚per·ə′kärd·ē·əm]
(anatomy)
The membranous sac that envelops the heart; it contains 5-20 grams of clear serous fluid.

pericardium

the membranous sac enclosing the heart
References in periodicals archive ?
Necropsy revealed a strongly adherent, thickened pericardial sac containing serosanguineous fluid and clotted blood.
He introduced a system of triage to manage patients according to the severity of their wounds and also successfully decompressed the pericardial sac of a patient by catheter drainage.
Epicardial pacing wires, which are generally removed on postoperative day five, have the potential to cause ACT by lacerating or disrupting fresh graft sites and causing bleeding into the pericardial sac (Abu-Omar, Guerrieri-Wolf, & Taggart, 2006; Reade, 2007).
The pericardial sac would be sewn around one baby's heart and an artificial membrane created for the other.
The autopsies revealed that all of these lobsters died from perforation of the pericardial sac and these lobsters were not used in our experiments.
and a pioneer in the field of study known as IntraPericardial Therapeutics and Diagnostics (IPTD), which uses the pericardial sac enveloping the heart as a pathway for diagnostic procedures, such as MRI, and therapy, including ablation, drug delivery and electrophysiology.
The medical term for accumulation of fluid in the pericardial sac is cardiac tamponade.
The condition can be treated with percutaneous pericardiocentesis, but when it occurs repeatedly, the surgeon creates a window between the pericardial sac and the pleural cavity, which has a much larger capacity.
5-cm, 27-gauge needle was used to enter the pericardial sac through the coelomic cavity, on midline at a point roughly midway between the keel and pubis.
At necropsy, the pericardial sac contained 100 mL of clear fluid.
However, perforation of liver abscess into pericardial sac is quite rare.
Cardiac Tamponade Fluid accumulated in the pericardial sac or tightened pericardial sac impairs left * Constrictive ventricular relaxation (Khasnis & pericarditis Lokhandwala, 2002).