This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'Lesser sac of stomach is bounded by -a) Posterior wall of stomachb) Visceral surface of spleenc) Under surface of liverd) Greater omentum \nSelect and explain. \nA. abc, B. acd, C. bc, D. bde', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Boundaries of the lesser sac are:-\n\n\nAnterior wall:- a Caudate lobe of the liver, stomach, lesser omentum, and 2nd layer of the greater omentum.\nPosterior wall:- 3rd layer of greater\xa0omentum, and structures forming stomach bed (transverse colon, transverse mesocolon, diaphragm, left kidney, left suprarenal gland, pancreas, and splenic vessels).\nRight border :- Right free margin of greater omentum and floor of epiploic foramen.\nLeft border:- Left free margin of greater omentum; gastrosplenic, lino renal and gastrophrenic ligaments.\nUpper border:- a reflection of the peritoneum from the esophagus to diaphragm.\nLower border:- Continuation of 2nd and 3rd layers of the greater omentum.', 'role': 'assistant'}]