Physiology The epicardium is one of the three layers of the hea. It is: A Continuous with the endocardium. B Also known as the visceral pericardium. C Composed of modified cardiac muscle cells. D Capable of increasing intraventricular pressure. 💡 Explanation The epicardium is one of the three layers of the hea. It is: ✓ Correct Answer: B. Also known as the visceral pericardium.