How are the stomach and small intestine suspended within peritoneal cavity?

The stomach and small intestine are suspended within the peritoneal cavity by mesenteries. Mesenteries are thin, double-layered folds of peritoneum that attach the organs to the posterior abdominal wall and provide a route for blood vessels, lymphatic vessels, and nerves to reach the organs.

The stomach is suspended by the gastric mesentery, which attaches the greater curvature of the stomach to the posterior abdominal wall. The small intestine is suspended by the mesentery of the small intestine, which attaches the mesenteric border of the small intestine to the posterior abdominal wall.

The mesenteries also help to divide the peritoneal cavity into compartments, which helps to prevent the spread of infection.