Pericardial Cavity (Mediastinum)
The space between the layers of the pericardium that contains fluid that lubricates the membrane surfaces and allows easy heart movement.
The membrane surrounding the heart.
Tough, white fibrous connective tissue that is the outer layer of the pericardium.
Parietal (Serous) Pericardium
Lines the internal surface of the fibrous pericardium.
Visceral (Serous) Pericardium
This is sometime called the epicardium and adheres to outside of the heart.
The innermost of the two layers of the pericardium.
The middle muscular layer of the heart wall.
The membrane that lines the cavities of the heart and forms part of the heart valves.
Cardiac muscle cells.
Attachment sites between the transverse lines between cardiac muscle cells.
The internal connective tissue of the heart.