Advanced Greater Omentum Quiz

Q1. Why can the greater omentum adhere to areas of intra-abdominal inflammation?

• Its mobile vascular and immune-rich tissue can adhere around inflamed areas
• It contains only cartilage and cannot move
• It has no peritoneal covering
• It is fixed permanently to the posterior abdominal wall

Q2. What is the developmental relationship between the inferior recess of the lesser sac and the greater omentum?

• The lesser sac remains open to the pelvis through the omentum in all adults
• The lesser sac initially extends between omental layers before the layers largely fuse
• The lesser sac develops inside the liver
• The lesser sac is formed by the sigmoid mesocolon

Q3. Why must surgeons identify the gastro-omental vascular arcade when dividing the greater omentum near the stomach?

• The renal arteries run inside the gastric wall
• The right and left gastro-omental vessels course along the greater curvature
• The superior mesenteric artery runs along the greater curvature
• The inferior vena cava lies in the free omental edge

Q4. How does the adult greater omentum relate to the transverse mesocolon after developmental fusion?

• It remains completely separate from the transverse mesocolon
• It becomes part of the sigmoid mesocolon
• Its posterior layers become fused with the transverse mesocolon
• It fuses with the small-intestinal mesentery along its root

Q5. Why can entry through the gastrocolic ligament expose the anterior surface of the pancreas?

• The lesser sac lies between the stomach and pancreas
• The pancreas lies within the transverse colon
• The gastrocolic ligament contains the pancreatic duct
• The pancreas lies inside the greater omentum

Q6. What is the anatomical basis for using a pedicled omental flap in surgery?

• Its mobility and vascular supply permit transfer while maintaining a vascular pedicle
• It is completely avascular
• It is composed of rigid cartilage
• It cannot be separated from the small intestine

Q7. Which feature distinguishes the greater omentum from the lesser omentum?

• It connects the liver directly to the anterior abdominal wall
• It suspends the jejunum and ileum from the posterior abdominal wall
• It derives from the dorsal mesogastrium and descends from the greater curvature
• It derives from the ventral mesogastrium and contains the portal triad in its free edge

Q8. Why can inflammation beneath the greater omentum alter its normal position on imaging or surgery?

• It is fixed to the aorta by a rigid ligament
• It lies entirely outside the peritoneal cavity
• It is fused to the diaphragm and cannot move
• Its mobile free portion can shift toward and adhere to inflamed structures

Q9. How do the gastro-omental arteries contribute to the vascular anatomy of the greater curvature?

• They supply only the transverse colon
• They form the portal vein
• They form an anastomotic arterial arcade along the greater curvature
• They terminate without communicating near the pylorus

Q10. Which statement best integrates the anatomy of the greater omentum?

• It is a ventral-mesogastrium-derived fold carrying the portal triad between liver and duodenum
• It is the primary mesentery of the jejunum and ileum
• It is a retroperitoneal fascia connecting the kidneys to the colon
• It is a mobile dorsal-mesogastrium-derived peritoneal apron with vascular, developmental, immune, and surgical relationships