Whey is the liquid remaining after milk has been curdled and strained. It is a by-product of the manufacture of cheese or casein and has several commercial uses. Sweet whey is manufactured during the making of rennet types of hard cheese like cheddar or Swiss cheese.
The endocardium underlies the much more voluminous myocardium, the muscular tissue responsible for the contraction of the heart. The outer layer of the heart is termed epicardium and the heart is surrounded by a small amount of fluid enclosed by a fibrous sac called the pericardium. 1 Function.
The pericardium has several functions: The pericardium is divided into three layers: The pericardial cavity lies between the visceral pericardium and the parietal pericardium. This cavity is filled with pericardial fluid which serves as a shock absorber by reducing friction between the pericardial membranes.ericardial Membranes. 1  Fibrous Pericardium-the outer fibrous sac that covers the heart. 2  Parietal Pericardium-lies between the visceral pericardium and the fibrous pericardium. 3  Visceral Pericardium-also called the epicardium, this is the outer layer of the wall of the heart.