Final answer:
The dorsal mesentery covers various abdominal organs and holds them to the dorsal surface of the body wall. It also contains blood vessels, lymphatic vessels, and nerves.
Step-by-step explanation:
The dorsal mesentery covers various abdominal organs, holding them to the dorsal surface of the body wall. It is a double layer of peritoneum that extends from the posterior wall of the abdominal cavity to the organs it covers. The dorsal mesentery also contains blood vessels, lymphatic vessels, and nerves that supply these organs.