Serosa

Definition

Serosa is a smooth membrane consisting of a layer of cells that secrete serous fluid, covering the outer surface of organs within the body cavities and lining the walls of the cavities themselves. It plays a crucial role in reducing friction between the organs as they move against each other.

Related terms

Serous fluid: A clear, watery fluid secreted by serosal membranes that lubricates organs and allows them to glide smoothly against one another.

Peritoneum: The specific serosa membrane that lines the abdominal cavity and covers its organs, facilitating their easy movement.

Visceral layer: The part of the serosa that directly covers an organ, forming a protective barrier that reduces friction during organ movement