MICROANATOMY

Detailed explanation-1: -Serous pericardium: This is the inner layer of your pericardium. It’s actually made of two layers, described below. Your serous pericardium produces pericardial fluid that lubricates your heart as it beats.

Detailed explanation-2: -The inner (visceral) layer of the serous pericardium lines the outer surface of the heart itself. Between the two layers of the serous pericardium is the pericardial cavity, which contains pericardial fluid. It is this fluid that provides lubrication between the two layers, and allows the heart to expand and contract.

Detailed explanation-3: -The pericardium acts as mechanical protection for the heart and big vessels, and a lubrication to reduce friction between the heart and the surrounding structures.

Detailed explanation-4: -The pericardium is a membrane like a sac that surrounds the heart and its major blood vessels. Normally there is a small amount of fluid between the pericardium and the heart that helps cushion the heart and reduces friction between the heart and the pericardium when the heart beats.

Detailed explanation-5: -The pericardial cavity-located between the outer and inner serous layer-contains a small amount of lubricating fluid, called serous fluid, which helps to lower the level of friction generated as the muscle of the heart contracts.