Intermediate Intestinal Arteries Quiz

Q1. Which vascular pattern is most characteristic of the proximal jejunum?

• A single artery without branches
• Few arcades with long vasa recta
• Many arcades with very short vasa recta
• No arcades and no vasa recta

Q2. Which vascular pattern becomes more prominent toward the distal ileum?

• Only direct aortic branches
• No mesenteric arterial connections
• More arcades with shorter vasa recta
• Fewer arcades with longer vasa recta

Q3. Where are the arterial arcades of the jejunum and ileum located?

• Inside the portal vein
• Between the layers of the mesentery
• Inside the renal capsule
• Within the lesser sac only

Q4. What is the main purpose of the arterial arcades formed by neighboring intestinal arteries?

• They provide anastomotic distribution of arterial flow
• They carry bile to the intestine
• They attach the pancreas to the spleen
• They drain venous blood

Q5. Which arterial branch may contribute to the blood supply of the terminal ileum in addition to ileal branches of the SMA?

• Superior rectal artery
• Ileal branch of the ileocolic artery
• Left colic artery
• Right gastric artery

Q6. Which feature can help distinguish jejunum from ileum during anatomical examination of the mesentery?

• Presence of a hepatic artery
• Presence of the splenic hilum
• The pattern of arcades and vasa recta
• Absence of all mesenteric vessels

Q7. How do the intestinal arteries relate to the superior mesenteric vein within the mesentery?

• The artery lies only inside the vein
• They travel with corresponding venous channels in the mesentery
• The vein is absent from the mesentery
• They occupy separate body cavities

Q8. What is the embryologic basis for the superior mesenteric arterial supply of the jejunum and ileum?

• They are foregut derivatives only
• They are midgut derivatives
• They develop from the cloaca
• They are hindgut derivatives

Q9. What do vasa recta do after leaving the arterial arcades?

• They pass toward the intestinal wall
• They supply the spleen exclusively
• They become the inferior vena cava
• They enter the liver through the porta hepatis

Q10. Which statement best describes anastomoses among jejunal and ileal arteries?

• The branches are completely isolated from one another
• They anastomose only with renal arteries
• They form the celiac trunk
• Adjacent branches form mesenteric arterial arcades