Epicardium

This tutorial by Matt from Kenhub focuses on the epicardium, one of the four layers of the heart. It explains the heart's anatomy, detailing each layer's function in aiding the heart's pumping action. The epicardium, primarily made of connective tissue, covers the heart's external surface and is fused with the myocardium. Some instructors consider the epicardium part of the pericardium. The video encourages viewers to explore more anatomy resources on Kenhub.

What is the composition of the epicardium?

Why might some instructors state that the heart has three layers?