The heart has three layers: epicardium, myocardium, endocardium
The pericardium is a double membrane sac
The innermost layer is the endocardium
simple squamous epithelium covers the valves and chambers
The endocardium is made of simple squamous epithelium
The middle layer is the myocardium
The middle layer is the heart muscle
The myocardium is made of involuntary striated muscle tissue
The tough outer surface of the pericardium is called the fibrous membrane
Serous membrane produces pericardial fluid to lubricate the surface of the heart.
Pericardium encloses the heart, consisting of an outer fibrous layer and an inner double layer of serous membrane
The myocardium is the thickest layer
Pericardium reduces friction in the chest when pumping
Pericardium provides lubricant for the heart
Epicardium is the outer layer of the heart
Epicardium is the visceral layer of the pericardium (inner pericardium layer)
Parietal is the outer layer of the pericardium
The parietal layer is fibrous with collagen and elastin fibers to provide strength and elasticity
Myocardium is the heart wall layer that contracts
