Intermediate Greater Omentum Quiz

Q1. How is the classic four-layered arrangement of the greater omentum formed?

• The ventral mesogastrium divides into four separate sheets
• The transverse mesocolon splits into four independent layers
• Four retroperitoneal fasciae unite around the stomach
• A double-layered fold descends and then turns upward, producing four layers

Q2. What developmental event brings the greater omentum into close association with the transverse colon?

• Fusion with the transverse colon and transverse mesocolon
• Descent into the inguinal canal
• Attachment to the urinary bladder
• Fusion with the sigmoid mesocolon

Q3. Which portion of the greater omentum connects the greater curvature of the stomach with the transverse colon?

• Splenorenal ligament
• Gastrocolic ligament
• Falciform ligament
• Hepatoduodenal ligament

Q4. Why can division of the gastrocolic part of the greater omentum provide surgical access behind the stomach?

• It can provide access to the lesser sac
• It exposes the urinary bladder directly
• It opens the pleural cavity
• It enters the renal pelvis

Q5. Which artery is the usual source of the right gastro-omental artery?

• Splenic artery
• Gastroduodenal artery
• Left renal artery
• Inferior mesenteric artery

Q6. Which artery is the usual source of the left gastro-omental artery?

• Inferior mesenteric artery
• Splenic artery
• Superior mesenteric artery
• Common hepatic artery directly in all cases

Q7. What happens to the potential spaces between the layers of the greater omentum during normal development?

• They become the pleural cavities
• They form the renal sinuses
• They largely fuse and the intervening potential space is mostly obliterated
• They remain as four large open cavities

Q8. Why is the greater omentum relatively mobile?

• Its free apron-like portion can move over abdominal viscera
• It lies entirely within the retroperitoneum
• It is fixed directly to the vertebral column along its entire length
• It is firmly fused to every loop of small intestine

Q9. Which feature contributes to the immune role of the greater omentum?

• Peyer's patches within its epithelium
• Aggregates of immune cells known as milky spots
• Thymic lobules
• Red bone marrow cavities

Q10. Why is the greater omentum an important landmark in abdominal surgery?

• It encloses the abdominal aorta
• It contains the portal triad
• It forms the posterior wall of the urinary bladder
• It overlies bowel and links the stomach with the transverse colon region