Mesenteries

• Is a fan-shaped double fold of peritoneum that suspends the jejunum and ileum from the posterior abdominal wall and transmits nerves and blood vessels to and from the small intestine.
• Forms a root that extends from the duodenojejunal flexure to the right iliac fossa and is about 15 cm (6 inches) long.
• Has a free border that encloses the small intestine , which is about 6 m (20 feet) long.
• Contains the superior mesenteric and intestinal (jejunal and ileal) vessels, nerves, and lymphatics.

• Connects the posterior surface of the transverse colon to the posterior abdominal wall.
• Fuses with the greater omentum to form the gastrocolic ligament.
• Contains the middle colic vessels, nerves, and lymphatics.

• Is a peritoneal fold that connects the sigmoid colon to the pelvic wall and contains the sigmoid vessels. Its of attachment may form an inverted V.

• Connects the appendix to the mesentery of the ileum and contains the appendicular vessels.