Answer:
The relationship between the serous pericardium and the heart wall is the pericardium is the fibrous sac that surrounds the heart and protects the heart wall and gives lubrication.
Step-by-step explanation:
Pericardium is a protective layer around the heart and protects heart to undergo any sort of friction during the activity. Serous pericardium is the inner layer on the heart, the outermost layer is called as fibrous pericardium.
Serous pericardium is divided into two parts. The Parietal pericardium and visceral pericardium, they both help in allowing heart to do the function smoothly.