The double-layered serous membrane that surrounds the organs of the abdominopelvic cavity is called the pericardium.

Serous Membrane

A thin membrane lining certain internal cavities of the body, producing a lubricating fluid to reduce friction between organs.

Pericardium

A double-layered membrane surrounding the heart, protecting it and anchoring it to the surrounding walls.

Abdominopelvic Cavity

A body cavity comprising both the abdominal and the pelvic cavities, housing major organs of digestion, reproduction, and excretion.