Anatomy And Physiology II (APII) Exam 3 Practice Test

What is the structure and function of the mesenteries?

Double sheets of peritoneal membrane that stabilize the positions of attached organs A single layer of tissue that lines the abdominal cavity A network of nerves supplying the gut A muscular sling supporting the intestines

Correct Answer:

Double sheets of peritoneal membrane that stabilize the positions of attached organs

Explanation:

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.

Access more questions from this quiz

Continue to Anatomy and Physiology II (APII) Exam 3 Practice Test for more practice questions and the full quiz experience.

Access More Questions