Advanced Left Gastric Artery Quiz

Q1. Why is the left gastric artery clinically relevant in upper gastrointestinal arterial bleeding?

• It drains the stomach into the portal vein
• It supplies only the abdominal wall
• It supplies regions that can be sources of upper gastrointestinal bleeding
• It is the main artery of the sigmoid colon

Q2. Which arterial pathway can maintain lesser-curvature perfusion if flow through one gastric artery is reduced?

• Connection between renal and gonadal arteries
• Anastomosis between the left and right gastric arteries
• Connection between sigmoid and superior rectal arteries
• Connection between ileocolic and appendicular arteries

Q3. Which feature explains why the distal esophagus has arterial contributions from both thoracic and abdominal sources?

• It lies entirely within the pelvis
• It is supplied only by the IMA
• It lacks arterial anastomoses
• Its arterial network spans thoracic and abdominal sources

Q4. A replaced left hepatic artery may occasionally arise from which vessel?

• Left gastric artery
• Inferior phrenic artery only
• Ileocolic artery
• Inferior mesenteric artery

Q5. Why is a left hepatic artery arising from the left gastric artery important during gastric surgery?

• It replaces the portal vein
• It is always a vein
• It may provide important arterial supply to the left liver
• It supplies only the appendix

Q6. Which sequence correctly traces the usual route from the abdominal aorta to the lesser curvature through the left gastric artery?

• Aorta, SMA, ileocolic artery, gastric branches
• Aorta, IMA, left colic artery, gastric branches
• Aorta, renal artery, gonadal artery, gastric branches
• Aorta, celiac trunk, left gastric artery, gastric branches

Q7. During lymphadenectomy for gastric surgery, why is the left gastric artery an important vascular landmark?

• It forms the common bile duct
• It marks the renal hilum
• It identifies the ureter
• It is associated with major lymphatic pathways of the lesser curvature

Q8. Which statement best describes variation in the left gastric artery?

• It always arises from the SMA
• It never gives branches before the stomach
• It is absent in all common variants
• It may give rise to variant hepatic arterial branches

Q9. What is the anatomical basis for potential collateral flow between abdominal and thoracic esophageal arterial territories?

• Sigmoid arterial arcades
• Esophageal arterial anastomoses across the diaphragm
• Renal arterial arcades
• Cecal arterial loops

Q10. Why must the left gastric artery be considered during operations involving the gastroesophageal junction?

• It is located entirely below the pelvic brim
• It supplies only the ileum
• It has no relation to the stomach
• It supplies the cardia and distal esophagus and may carry variant hepatic branches