What is the structure and function of the mesenteries?

Prepare for your Anatomy and Physiology II Exam with our comprehensive exam resources. Utilize flashcards, multiple choice questions with hints, and detailed explanations. Boost your readiness for success!

Double sheets of peritoneal membrane that suspend the intestines and provide routes for blood vessels, nerves, and lymphatics. The mesentery consists of two layers of peritoneum with a connective-tissue core that often contains fat, and it anchors the gut to the posterior abdominal wall while enabling the gut to move during digestion. This arrangement stabilizes the positions of the attached organs yet allows flexible movement, and it supplies the gut with its blood supply, nerves, and lymphatic drainage via the vessels that run through the mesentery. It’s not a single-layer lining, not a network of nerves, and not a muscular sling, which is why the double-layer, conduit-rich description best fits its structure and function.