Intermediate Suprarenal Arteries Quiz

Q1. Where do the superior suprarenal arteries usually originate relative to the diaphragm?

• Inferior mesenteric artery in the lower abdomen
• Internal iliac artery in the pelvis
• Inferior phrenic artery near the diaphragm
• Femoral artery below the inguinal ligament

Q2. How does the middle suprarenal artery typically reach the gland?

• It descends from the internal thoracic artery
• It courses laterally from the abdominal aorta
• It passes through the renal pelvis
• It ascends from the external iliac artery

Q3. Why can the origin of an inferior suprarenal artery vary?

• The gland has no embryologic blood supply
• All inferior branches must arise from the celiac trunk
• The vessel is actually a vein
• The adrenal arterial pattern has substantial anatomic variation

Q4. What happens to many small arterial branches near the adrenal capsule?

• They form a subcapsular arterial plexus
• They drain directly into the portal vein
• They become lymphatic vessels
• They enter the renal pelvis

Q5. How is most of the adrenal cortex supplied from the capsular plexus?

• Through cortical arteries feeding sinusoidal capillaries
• Through the central adrenal vein in reverse
• Through lymphatic sinuses only
• Through collecting ducts

Q6. What are long cortical or medullary arteries in the adrenal gland?

• Branches of the portal vein
• Arteries that traverse the cortex to supply the medulla directly
• Veins that drain the renal pelvis
• Lymphatics confined to the capsule

Q7. What is the significance of anastomoses among suprarenal arterial branches?

• They connect the multiple arterial sources supplying the gland
• They drain catecholamines into the aorta
• They convert arteries into veins
• They prevent any cortical perfusion

Q8. Which arterial source is most closely associated with the renal hilum and inferior aspect of the adrenal gland?

• Inferior phrenic vein
• Middle suprarenal artery exclusively from the celiac trunk
• Inferior suprarenal artery
• Superior suprarenal arteries

Q9. Which arterial source approaches the gland from a more superior direction?

• Inferior mesenteric artery
• Superior suprarenal arteries
• Internal iliac artery
• Inferior suprarenal artery

Q10. Why is the adrenal arterial supply described as segmentally complex rather than a single pedicle?

• The gland is supplied through a venous portal system
• All arterial blood arrives through the ureter
• Only one artery enters each gland
• Multiple parent vessels contribute numerous small branches