The Probert Encyclopaedia of Medicine

SEROUS MEMBRANE

A serous membrane is a membrane that lines certain areas inside the body, such as the sac that surrounds the heart. Between the inner layer of serous membrane covering various organs and the outer layer of the organ itself is a space kept wet by a lubricating serous fluid that allows the covered organ to move easily, such as the lungs, which move during breathing.
Research Serous Membrane