Anatomy and Physiology II Practice Test

Another term for the visceral pericardium is the ________.

1. Epicardium

2. Endocardium

3. Pericardial Sac

4. Myocardium

The correct answer is: Epicardium

The visceral pericardium is indeed referred to as the epicardium. This layer is a serous membrane that directly covers the heart's surface, playing a crucial role in reducing friction between the heart and surrounding structures as the heart beats. The epicardium also contains blood vessels, lymphatics, and nerves that supply the heart. It is part of the pericardial cavity, which also houses the pericardial fluid, facilitating smooth movement during heart contractions. In contrast, the endocardium is the inner lining of the heart chambers, which helps to keep blood flowing smoothly, and the myocardium refers to the thick muscle layer of the heart responsible for contraction. The pericardial sac encompasses the heart, providing additional protection and support, but it is not synonymous with the visceral pericardium itself. Thus, epicardium as an alternative name for the visceral pericardium accurately reflects its position and function related to the heart.