what is the pericardium?

Answer 1

It is a periotneal membrane that forms a sac surrounding the heart. There are two layers to this sac: the fibrous pericardium and the serous pericardium. The serous pericardium, in turn, is divided into two layers; in between these two layers there is a potential space called the pericardial cavity.

The fibrous pericardium is the most superficial layer. It is a dense connective tissue, protecting the heart, anchoring it to the surrounding walls, and preventing it from overfilling with blood. It is continuous with the outer adventitial layer of the neighboring great blood vessels.

The serous pericardium is deep to the fibrous pericardium. It contains two layers, both of which function in lubricating the heart to prevent friction from occurring during heart activity.

* The layer next to the fibrous pericardium is the parietal layer.
* The layer next to the heart is the visceral layer, also known as the epicardium.

Together these two layers form a continuous uninterrupted membrane. Between these two layers exists a small cavity called the pericardial cavity, which contains a supply of serous fluid.The serous fluid that is found in this space is known as the pericardial fluid.

Answer 2

It is a double-walled sac that encloses the heart

Answer 3

i believe this is the sac-like tissue that surrounds the heart and major blood vessels