serosa

A serous membrane, especially one that lines the pericardial, pleural, and peritoneal cavities, enclosing their contents.

A membrane that surrounds the embryo of birds, reptiles, and many insects.

A serous membrane.

A membrane which lines an internal cavity to protect the contents and which secretes serum.

a thin membrane lining the closed cavities of the body; has two layers with a space between that is filled with serous fluid