The pericardial space is found between which two layers of the cardiac wall?

The pericardial space is indeed found between the visceral and parietal layers of the pericardium. The visceral layer, also known as the epicardium, directly adheres to the surface of the heart, while the parietal layer lines the fibrous pericardium that encases the heart. This space is critical as it contains pericardial fluid, which reduces friction between the heart and the surrounding structures during the heartbeat cycle, facilitating smooth movement.

Understanding the anatomical relationships among the layers of the heart wall is essential in cardiology and echocardiography. The other layers mentioned in the question, such as the myocardium (the heart muscle) and endocardium (the inner lining of the heart chambers), do not form a pericardial space but are integral components of the heart's structure. The epicardium is often confused with the pericardial layers; however, it is specifically the visceral aspect of the pericardium that is crucial in defining the pericardial space.