What does the peritoneum comprise in the abdominal cavity?

The peritoneum is a crucial part of the abdominal cavity, consisting of two distinct layers: the visceral layer and the parietal layer. The visceral layer adheres directly to the surface of the abdominal organs, providing them with a protective covering and facilitating their movement within the cavity. In contrast, the parietal layer lines the abdominal wall itself. This structure is essential because it helps to support the organs, provides a conduit for vessels and nerves, and creates a lubricated surface that reduces friction during organ movement.

Having both layers enhances the functionality of the abdominal cavity by allowing for complex movements of the organs while maintaining their positions relative to each other and the body wall. Understanding this dual-layer structure is foundational for EMTs, as it aids in comprehending various medical conditions, such as peritonitis, where the peritoneum becomes inflamed, and the implications this may have on patient assessment and care.