serous pericardium

Together they are usually called the serous pericardium because they contain the pericardial fluid.

The serous pericardium is deeper than the fibrous pericardium in the heart.

It consists of the serous pericardium and the fibrous pericardium.

The visceral layer extends to the beginning of the great vessels, becoming one with the parietal layer of the serous pericardium.

The pericardium is a double-walled sac - fibrous pericardium and serous pericardium - that contains the heart.

There are two layers to the pericardial sac: the outermost fibrous pericardium and the inner serous pericardium.

The ascending aorta is contained within the pericardium, and is enclosed in a tube of the serous pericardium, common to it and the pulmonary artery.

The serous pericardium consists of the parietal layer, which lines the inside of the fibrous pericardium, and the visceral layer, which adheres to the surface of the heart.

Between the left pulmonary artery and subjacent pulmonary vein is a triangular fold of the serous pericardium; it is known as the ligament of the left vena cava (vestigial fold of Marshall).

The serous pericardium, in turn, is divided into two layers, the parietal pericardium, which is fused to and inseparable from the fibrous pericardium, and the visceral pericardium, which is part of the epicardium.

The fibrous pericardium, which constitutes the outermost sac and is composed of tough, white fibrous tissue lined by the parietal layer of the serous pericardium, fits loosely around the heart and attaches to large blood vessels emerging from the top of the heart but not to the heart itself.