Advanced Ileocolic Artery Quiz

Q1. Why can thrombosis of the appendicular artery rapidly compromise the appendix?

• It supplies only the mesoappendix
• It behaves largely as an end artery
• It has extensive collateral supply from the inferior mesenteric artery
• It carries venous blood

Q2. During an appendectomy, which peritoneal fold is opened or divided to control the appendicular artery?

• Mesoappendix
• Falciform ligament
• Lesser omentum
• Gastrosplenic ligament

Q3. Which arterial pattern provides continuity between the ileocolic territory and more proximal colonic branches of the superior mesenteric artery?

• Circle of Willis
• Pancreaticoduodenal arcade
• Gastric arterial arcade
• Marginal artery of the colon

Q4. A surgeon ligates the ileocolic artery near its origin. Which structures are most directly at risk of reduced arterial inflow?

• Terminal ileum, cecum, appendix, and proximal ascending colon
• Liver and gallbladder
• Descending and sigmoid colon
• Stomach and spleen

Q5. Which developmental fact explains why the ileocolic artery arises from the superior mesenteric artery?

• The ileocecal region is derived from the midgut
• The ascending colon develops entirely from the hindgut
• The appendix is supplied by the inferior mesenteric artery during development
• The cecum is a foregut derivative

Q6. Which feature is most important when identifying the appendicular artery during surgery?

• It runs within the mesoappendix toward the appendix
• It crosses the esophageal hiatus
• It passes through the hepatoduodenal ligament
• It enters the kidney at the hilum

Q7. If the right colic artery is absent, which vessel may contribute more prominently to the arterial supply of the ascending colon?

• Colic branch of the ileocolic artery
• Left gastric artery
• Inferior rectal artery
• Cystic artery

Q8. Which sequence best traces blood from the abdominal aorta to the appendix?

• Aorta, superior mesenteric artery, ileocolic artery, appendicular artery
• Aorta, inferior mesenteric artery, left colic artery, appendicular artery
• Aorta, celiac trunk, splenic artery, appendicular artery
• Aorta, renal artery, gonadal artery, appendicular artery

Q9. Why is the ileocolic artery important during right-sided colonic resection?

• It drains the right colon into the portal vein
• It is the main artery of the descending colon
• It supplies key portions of the ileocecal region and proximal right colon
• It supplies only the abdominal wall

Q10. Which statement best describes anatomical variation of the ileocolic arterial branching pattern?

• Its distal branch arrangement can vary
• Its branching pattern is identical in every individual
• It never forms anastomoses with neighboring vessels
• It normally arises from the inferior mesenteric artery