What is the peritoneum?

What is the peritoneum?

• A. A large sheet of serous membrane.
• B. A small muscular layer lining the cavity.
• C. A fibrous capsule around abdominal organs.
• D. A fatty tissue surrounding the viscera.

Answer: (A)

The peritoneum is a large sheet of serous membrane that lines the abdominal cavity and covers most of the abdominal organs. It has a parietal layer lining the cavity wall and a visceral layer covering the organs, with a potential space between them filled by a small amount of serous fluid to allow smooth movement. This serous membrane helps reduce friction, anchors organs via mesenteries, and provides a pathway for blood vessels, nerves, and lymphatics. It is not a muscular layer lining the cavity, nor a fibrous capsule around organs, nor simply fatty tissue surrounding the viscera.

The peritoneum is a large sheet of serous membrane that lines the abdominal cavity and covers most of the abdominal organs. It has a parietal layer lining the cavity wall and a visceral layer covering the organs, with a potential space between them filled by a small amount of serous fluid to allow smooth movement. This serous membrane helps reduce friction, anchors organs via mesenteries, and provides a pathway for blood vessels, nerves, and lymphatics.

It is not a muscular layer lining the cavity, nor a fibrous capsule around organs, nor simply fatty tissue surrounding the viscera.