Q2. What makes up each of the pericardial layers, and what is special about the fluid produced by this membrane?
What makes up each of the pericardial layers, and what is special about the fluid produced by this membrane?
There are two main pericardial layers: the outer fibrous pericardium and inner serous pericardium. The fibrous pericardium is dense and serves to protect and anchor the heart. The serous pericardium is more complicated, as it is split into the parietal layer and the visceral layer also known as the epicardium. The parietal layer is the outer layer of the serous pericardium, and the visceral layer or epicardium is the inner layer of the serous pericardium.
What makes up each of the pericardial layers, and what is special about the fluid produced by this membrane?
Between the parietal and visceral layers is a space known as the pericardial cavity, which contains a fluid called the pericardial fluid. The fluid acts as a lubricant to reduce friction between the layers during heart contractions, and is also a cushion for shock absorption.
