Three major areas of study within ethics recognised today are: 1  Meta-ethics, concerning the theoretical meaning and reference of moral propositions, and how their truth values (if any) can be determined. 2  Normative ethics, concerning the practical means of determining a moral course of action.
In a healthy heart blood flows one way through the heart due to heart valves, which prevent backflow. The heart is enclosed in a protective sac, the pericardium, which also contains a small amount of fluid. The wall of the heart is made up of three layers: epicardium, myocardium, and endocardium.he heart is a muscular organ in humans and other animals, which pumps blood through the blood vessels of the circulatory system. Blood provides the body with oxygen and nutrients, and also assists in the removal of metabolic wastes.
Best Answer: The pericardium or the sac that sorrounds the heart is made of 2 layer. The outer is Fibrous pericardium. and the inner is Serous pericardium. The Serous Pericardium is made of two other layers: the Parietal peri.. and the VISCERAL peri.. . parietal pericardium is attached to the fibrous pericardium.Visceral pericardium is attached to the surface of heart and myocard of it.Another name of visceral pericardium is Endocard.he word pericardium means around the heart. The outer layer of the pericardium is called the parietal pericardium. The inner part of the pericardium that closely envelops the heart (the visceral pericardium) is also called the epicardium. Akshav Â· 9 years ago.