Intermediate Sigmoid Arteries Quiz

Q1. Which branch usually provides arterial continuity between the descending colon and sigmoid arterial territory?

• Inferior pancreaticoduodenal artery
• Appendicular artery
• Right gastric artery
• Descending branch of the left colic artery

Q2. Which vessel is the continuation of the inferior mesenteric artery after its sigmoid branches have arisen?

• Middle colic artery
• Superior rectal artery
• Inferior rectal artery
• Right colic artery

Q3. What is the principal role of the arterial arcades formed by sigmoid arteries?

• They provide anastomotic distribution of blood to the sigmoid colon
• They drain venous blood
• They supply the pancreas
• They carry lymph only

Q4. Which named region is associated with the junction between the last sigmoid artery and superior rectal artery?

• Calot's triangle
• Sudeck's point
• Griffith's point
• McBurney's point

Q5. Why are sigmoid arterial anastomoses clinically important?

• They contribute to collateral colonic perfusion
• They form the portal vein
• They supply the kidneys
• They prevent all venous thrombosis

Q6. Which structure carries the sigmoid arteries and their accompanying veins?

• Broad ligament
• Sigmoid mesocolon
• Gastrosplenic ligament
• Hepatoduodenal ligament

Q7. Which arterial connection links the sigmoid territory superiorly with the descending-colon territory?

• Sigmoid to cystic anastomosis
• Sigmoid to left gastric anastomosis
• Sigmoid to left colic anastomosis
• Sigmoid to renal anastomosis

Q8. Which arterial connection links the sigmoid territory inferiorly with the rectal circulation?

• Sigmoid to right gastric anastomosis
• Sigmoid to superior rectal anastomosis
• Sigmoid to renal anastomosis
• Sigmoid to splenic anastomosis

Q9. Which feature of sigmoid arteries commonly varies between individuals?

• Their supply to the brain
• Number and branching pattern
• Their status as veins
• Their passage through the inguinal canal

Q10. Which statement best describes the relationship between sigmoid arteries and the marginal artery?

• They form the inferior vena cava
• They terminate exclusively in the pancreas
• Sigmoid branches contribute to the marginal artery
• Sigmoid arteries bypass the colon